Six months on from the massacre at Sandy Hook Elementary School, our Washington Correspondent Robert Moore has been investigating the gun culture in the US.
'America and its Guns' is starting now on ITV or you can watch it live on the ITV Player.
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Sadly, these high-school students have already received the most abrupt and cynical lesson of their lives.
A top temperature of 9 or 10 Celsius (48-50 F).
The poll comes ahead of a debate in the House of Commons on Friday on a new Bill which would introduce such a system in England.