That was the Christy Moore song about the fire in the night club, a wasn't it? I think the night club owbers took out an injunction - but that's not exactly illegal.

there are lots of cases where legal action has been used to muzzle an artist (in very country)- but that's not like the executive of the country banning something.

there was some kerfuffle in Ireland about the Python's song Every Sperm is Sacred.........I'm not sure what that was.