And his tweet is calling fans bell ends including the ones that make death threats. Are the fans who tell them they're not good enough bell ends? Are the fans that shout "you're not fit to wear the shirt" bell ends? Fan's who have travelled for hours and feel let down.
Death threats have no place and are cowardice, but if you refer to all fans giving "abuse" as bell ends, without defining it, you're not going to go down very well.
As a poster above said, show it on the pitch and report death threats and similar ilk to those who should take action.