I suppose so. But it seems a very strange sort of lashing out.
A large proportion of Scots want to leave the Union, so we're entitled to burn effigies of them? It's hardly calculated to change their minds, is it?
Well lashing out usually isn't founded in any kind of logic and doesn't really serve any particular objective beyond creating a false sense of self-satisfaction for the one lashing out.
In any case, I wasn't trying to justify the burning of effigies; I was just trying to offer an alternate explanation to the "English are prejudiced against Scots" motive. Of course, I am far from being an expert on English-Scottish relations so I am willing to accept the fact that I may be completely off base in my assessment.