Adam Lanza kept violent video games and articles describing various mass-shootings in his bedroom, the report into the Sandy Hook massacre revealed.
Previously unseen images from inside the gunman's home show more guns and ammunition as well as edged weapons, knives, swords and spears. The photographs also show Lanza's bedroom windows taped over with black bin bags.
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The Government's Prevent campaign is "simply not trusted" by many British Muslims, the Independent Reviewer of Terrorism Legislation said.