"It's a bit pathetic to accuse Mrs Thatcher (note the mmannerly use of the Prefix) of being divisive,"

It is not an accusation as much as a statement of fact! Divisive in this contect meaning tending to divide opinion and she divided opinion sharply. Much more so than most politicians. Especially here in Scotland. She of course had her admirers and supporters but there is no denying that she was undoubtedly the most unpopular politician of certainly the second half of the 20thC here. That's not to say she chose to be divisive. Apparently she couldn't understand why she was so despised in Scotland when she admired Scotland so much. Though of course it wasn't the real Scotland of the 20thC she admired. It was Victorian Scotland.

I do think that people celebrating someone's death is offensive but I don't see how the dead are beyond any criticism. That was all I was saying.