It's clear to me that this was really just an old-school Labour lefty thug playing to the crowd by saying something that they have all said or thought. None of the righteous are up in arms about this, because Thatcher is an "approved target".
I made the comment on twitter that if it was a joke, it would have been funny. Sunny Hundal then said that it was all in the timing and delivery. He has also been making disparaging remarks about Tories not having a sense of humour. I wonder how he'd feel about faux murderous attacks on Michael Foot or John Smith. I also wonder why the self-righteous who bleat on about sexist jokes encouraging rape aren't up in arms about making jokes about killing a woman.
Personally, I don't give a fuck about Thatcher, I think she was hugely overrated by both the fans and her opponents. But if you're going to be self-righteous, you hypocritical fuckers, then you should be consistently so.
Approving of hateful jokes just because the target is an untermensch is a bit, well, 1930's, really.