There was many a song considered seditious by crown authorities in Ireland back in the "bad old days", and many considered "theosophically seditious" by the church authorities when they supplanted the crown as an authority figure. The supression of thought is a far greater "sedition" than any song pointing out political or religious idiocies of the day. Even what most of us would rightly call "hate songs" should have free access to that mythical market place of ideas, where they earn more scorn than anything. Political and religious supression in Ireland were countered by emergence of brilliant satires, which were more effective in delivering the message that any more overt lyric was likely to have been. My all-time favorite in that category is "Whack Fol The Diddle". Any marketer on the west side of the pond will tell you that there is no greater ad slogan than to claim a thing is "banned" somewhere. It's a great "tease".