Re: the cancellation stuff - I don’t support masses of people piling onto employers (or prize committees or buildings that rent out for events) demanding their employee (nominee or event organiser etc) be cancelled for perfectly legal ‘wrong think’):
However, if an employer discovers their employee has done something illegal or that is in breach of their contract and has the potential to bring a business or org into disrepute then I would expect the employer to follow the usual procedures for workplace disciplinary in a fair and even handed manner (and the expected standards for someone who say, is a singer in a rock band are going to be different to those for teachers, doctors etc).
Calling for more fatal violence is clearly going to violate expected standards in many jobs and professions.
(I just wish the workplace tribunal was cheaper and faster because at the moment a lot of people have failed to get a fair hearing via HR because of the stupidities of stonewall law)
Celebrating the violent death of a media figure is going to be a lot less grey area/muddled than insisting that men can’t be women (thanks to the idiocy of the GRA 2004).