That wraps up our coverage of President Obama's remarks at the memorial service for fallen police officers in Dallas. Thanks for sticking with us.
- President Barack Obama urged the US to "reject despair" as he paid tribute to five police officers killed during a deadly sniper attack
- Former President George W Bush paid tribute to the officers
- The Dallas officers were killed by a Micah Xavier Johnson after a peaceful protest in the city's downtown against US police killing of two black men within two days
- Johnson, an Army veteran, wounded at least nine other officers and two civilians and told police negotiators he was upset by recent shootings and wanted to kill white people, specifically officers
- Mr Obama will also meet privately with the families of the victims on Wednesday
From Sarah Mervosh of The Dallas Morning News:
Accolades are pouring in for Mr Obama's speech in Dallas from both conservative-leaning and liberal writers and pundits.
During his remarks, Obama noted the frequency in which he was forced to speak in the wake of mass shootings during his presidency.
"I'm not naive", Mr Obama said, noting he could see how "inadequate words can be in bringing about lasting change".
"I've seen how inadequate my own words can be," he said.
The song, performed by the combined Interfaith and Dallas Police Choir, was born of the Civil War, as a Union anthem. Its evolution as an anthem for activists, solace in times of crises and rallying cry for unification is detailed in a 2010 article from The Atlantic.
Conservative commentators took to Twitter to say the president's speech was good... until he started talking about gun control and the two black men who were killed by police officers recently.
"With an open heart we can learn to stand in each other's shoes", Obama said.
"With an open heart we can worry less about which side is wrong, and worry more about joining sides to do what is right".
It's too easy for people to get guns in the US, said Mr Obama.
The president noted that race relations had "dramatically improved" in his lifetime, adding, "we know bias remains", no institution is immune, including police departments.
Mr Obama said we ask too much of police and too little of ourselves in dealing with race relations in the US.
"If we're to sustain the unity, we need to get through these difficult times. ... We need to act on the truths we know," Mr Obama said. "And that's not easy. It makes us incredibly uncomfortable. We're going to have to be honest with each other and ourselves."
While praising local law enforcement, President Obama said the "men and women of the Dallas police, they did not flinch and they did not react recklessly".
"We mourn fewer people today because of your brave actions," he said.
As the events unfolded in Dallas, everyone on the ground was helping one another out, said Mr Obama.
"That's the America I know," he said.
President Obama is paying tribute to the slain officers, giving stories of their lives and how they became police officers.
We're here to find some meaning amidst our sorrow
The mayor introduces Dallas Police Department Chief David Brown, whose comportment in recent days has garnered widespread praise.
The Connecticut-born, Texas-raised George W Bush lived in Dallas from 1988 to 1995, and returned to the city upon conclusion of his presidency. He lives in the Preston Hollow neighbourhood of the city, and the George W Bush Presidential Library and Museum is housed at Southern Methodist University in Dallas.
The fallen officers confronted evil and overcame it by shielding fellow citizens from bullets and sacrificing their own lives so that others could live, said Texas Senator John Cornyn.
Because of their example, Dallas will overcome the evil of that day when the officers died, he said.
"Today we join millions... who continue to lift up these officers in our prayers," he said.
Interfaith leader Imam Omar Suleiman, speaking at today's service, was featured in the Washington Post on Sunday, alongside fellow Dallas clergyman Reverend Michael Waters, of Joy Tabernacle AME Church. The pair, who met at a vigil for the Charleston shooting, were on scene as the shots ran out last week and fled together, seeking refuge in Waters' church.
Rabbi Andrew Marc Paley and Revered Sheron C Patterson offer prayers as well.
Is this what it takes for us to come together? Does it always have to be a tragedy? Does it always have to be murder? Does it always have to be terrorism? Does it always have to be that hatred forces us to love? Does it always have to be that injustice forces us to call for peace? Can we not come together like this in times other than what we saw last night?
From the BBC's Ashley Semler:
Dallas Mayor Mike Rawlings thanked his city for its support in response to the shootings and said today's service is to show support to the victims' families.
"We understand that Dallas' pain is a national pain," he said, and thanked President Barack Obama, Vice-President Joe Biden and George W Bush and George H W Bush for being in attendance.
The memorial service has begun. President Obama, Michelle Obama and Vice President Joe Biden and Jill Biden stood as the national anthem, the Star-Spangled banner, was sung.
Dallas Police Department Major Max Geron shares a video from inside the memorial service:
Who were DART Officer Brent Thompson, Officer Patrick Zamarripa, Officer Michael Krol, Sergeant Michael J Smith and Senior Corporal Lorne Ahrens? We profiled the veterans, parents, grandparents, spouses and community leaders killed in Dallas: http://www.bbc.com/news/world-us-canada-36748145
While en route to Dallas, President Obama called the relatives of Alton Sterling and Philando Castile, the two black men who were fatally shot by police in the days leading up to the Dallas attack, "to offer his and the First Lady’s condolences on behalf of the American people for the death of their loved ones", the Dallas Morning News reported.
Mr Sterling was shot dead in Baton Rouge, Louisiana, during a police confrontation at a convenience store.
Mr Castile was fatally shot by police in Minnesota during a traffic stop.
Michael Eric Dyson, a professor at Georgetown University and author of The Black Presidency, tells the BBC's Katty Kay that Mr Obama must pay tribute to the heroism of the fallen officers while also acknowledging the mounting racial tension over policing across the nation.
Portraits of the five victims are displayed as law enforcement officers file into the symphony centre.
Wounded DART police officer Misty McBride arrived at the memorial service with her daughter.
Five seats remain empty to remember the five fallen Dallas officers at the memorial service.
The crowd erupted into applause before the memorial as injured officers and family members of those killed entered the Morton H Meyerson Symphony Center.
Two presidents will pay tribute to the slain officers, with former president George W Bush speaking after Senator John Cornyn of Texas. President Barack Obama will address the Morton Meyerson Symphony Center after Dallas Police Chief David Brown.
Interfaith leaders the Reverend Sheron Patterson, Imam Omar Suleiman and Rabbi Andrew Marc Paley will offer prayers.
Dallas police officers displayed black bands over their badges to remember the victims in last Thursday's deadly sniper attack.
Law enforcement officials and guests enter the Morton H. Meyerson Symphony Center, where President Obama will deliver his address at 12:45 pm CT (1745 GMT).
BBC News, Dallas
President Obama will spend part of the day in Dallas, and the situation for his secret service officers will be tense. Lee Harvey Oswald shot President John F Kennedy in Dealey Plaza in 1963.
Americans were shocked by his death, and decades later the word “Dallas” is still associated with the assassination.
As it happens Dealey Plaza is located only blocks from a community college where Micah Johnson hid on the night he shot police officers.
They both carried out their shootings in the same neighbourhood, a place with wide streets and big, open spaces. From their vantage points, Oswald and Johnson had a clear shot.
On Tuesday Secret service officers will focus on ensuring that nothing like this happens during Obama’s visit.
White House spokesman Josh Earnest said Republican Senator Ted Cruz's attendance and remarks from former President George W Bush and Senator John Cornyn show the US is not nearly as divided as it may seem.
He added, "it's in moments of tragedy, that this unity is revealed".
Senator Ted Cruz will travel with President Barack Obama to Dallas aboard Air Force One.
The one-time Republican presidential candidate will join former George W Bush, Vice-President Joe Biden and first lady Michelle Obama in attending the interfaith memorial service.
The trip is the Texas Republican's first aboard Air Force One with Mr Obama.
Minority Leader Rep. Nancy Pelosi of California and Texas Democratic Representatives Marc Veasey and Eddie Bernice Johnson will also fly with the president.
President Obama is also scheduled to meet with law enforcement officials, civil rights leaders and activists to discuss how to restore "the bonds of trust" between police and the communities they serve, the White House said on Monday.
Welcome to our live coverage of President Barack Obama's visit to Dallas to honour five police officers killed by a gunman on Friday
Mr Obama will make remarks at an interfaith memorial for the five officers and meet privately with the victim's families afterwards.
The US president's trip comes amid mounting racial tension across the country. The Dallas Police officers were ambushed by Micah Xavier Johnson, an Army veteran, after a peaceful protest against the deaths of two black men by police in two days.