Comedians and celebrities in the UK and US have sparked fury after making jokes about political violence. Jokes, either inciting, justifying or normalising violence, have been against politicians over the years but came to a head after an assassination attempt against Donald Trump. Just days before the attack on the former US President, one BBC presenter called for Trump to be “murdered” after a Supreme Court judgement on presidential immunity. Posting on social media, David Aaronovitch said: “If I was Biden I’d hurry up and have Trump murdered on the basis that he is a threat to America’s sec…