They're actually illegal in the UK (although the web seems to be a huge grey area) - I can't imagine how fucked the country would be if we had those kinds of spending and broadcasting rules.
At this point the most successful grassroots political movement of the last several years acted on behalf of a dictatorial head of state and took guns into state capitols to explicitly threaten state-level politicians in order to convince them to give everybody a deadly virus. And is threatening to do the same to the national legislature in a couple weeks in order to convince them to create a new category of President For Life.
