It is worth remembering that despite the disproportionate attention given to a collection of misfits and oddballs who are celebrating the death of Margaret Thatcher- it really is a tiny number of people.
They have a lot in common with Fred Phelps of the Westboro Baptist Church who protest at the funerals of soldiers and gays. Like Phelps they represent no wider movement.
The agenda of the press in giving them such coverage is worth considering- the left is probably trying to make her appear more hated than she was, the likes of the Daily Mail are trying to hype something up so they can be outraged at it.
90% of prominent left wing figures that I have heard of have been
respectful, 90% of lefties I know personally have been respectful. That isn't to say that they liked her but normal people can tell the difference between an opponent and someone to hate.
Secondly it is worth remembering that while politicians are inherently divisive, Lady Thatcher is not unpopular as this poll in the Guardian from September demonstrates:
The least respected figure on the list, George Galloway, is one of the oddballs and misfits I mentioned earlier (as well as being an antisemitic totalitarian crook) . Galloway isn't divisive of course, everyone is united in thinking he's a twat.
These "celebrations" are about thuggery and intimidation- trying to dominate the public space for one fringe outlook.