US gun lobby calls for armed guards in all schools
The US has observed a moment of silence for the 26 victims of the Connecticut school shooting, as a gun lobby group called for armed security at schools.
Bells in Newtown tolled 26 times, one week after 20 children and six adults died at Sandy Hook Elementary School.
In Washington, the National Rifle Association called for "good guys" to be armed for "absolute protection".
The BBC's north America editor Mark Mardell reports.
21 Dec 2012