A second protester unfurled a banner stating 'NRA Blood On Your Hands' during a National Rifle Association press conference being held after the Sandy Hook school shootings.
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Scotland Yard say a 73-year-old man has been arrested in West Sussex on suspicion of sending offensive messages on social media.
Ian Stewart, the fiancé of children's author Helen Bailey has been found guilty of her murder.
Actor Harrison Ford had a near miss at a Californian airport after landing a plane on a taxiway.