If only they could see us now

Had the nazis won the second world war and had they finally invaded and conquered the British Isles there would have been little doubt that lampooning their great leader would have been an offence. Luckily, and with a great deal of effort and sacrifice we, along with out allies, won the conflict. With that in mind it does seem amazing to me that lampooning the leader of the opposition does seem to have become a punishable act.