It’s all part of a liberal disease called “Mind your own business”. The contest was obviously wrong. There’s no reason to aggravate people just because I feel like it. At least not in Yiddishkeit.
There was once a story, I forgot the specific details, about a Rabbi asking a non Jewish worker to work on Sunday despite it being the guy’s day of rest. I wish someone can help me out here, but he said something to the effect that since it’s a made-up Sabath, it’s okay to ask him to violate it. This story kind of went against the grain of my liberal senses (I am American after all) which would suggest that if you want the non-Jew to respect your day of rest, respect his. So if this view is correct, perhaps it’s okay to draw satirical cartoons, but I’d assume it should never be done with so much pomp and “rubbed into their faces”.