Antony Costa and Duncan James on Newsnight
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Duncan James: 'Name and shame twitter trolls'

When journalists, historians and politicians - all of them women - received death and rape threats on Twitter the site promised to beef up the protection of users and in some cases the police investigated.

It prompted a debate about the proliferation of violent and sexist messages posted on social media.

Now two members of the band Blue, Antony Costa and Duncan James, have called in police after their relatives were sent bomb and death threats by someone on Twitter.

They spoke to Victoria Derbyshire on BBC Newsnight.

Go to next video: How to deal with Twitter trolls?