If one says something against a person’s nation, state, county, city, or even neighborhood, there is likely to be some rage involved. As I feel no particular love of any one place above another, I find such anger to be quite funny.
If one says something counter to a person’s religious beliefs, that person is likely to become very agitated, especially if their religion is a monotheistic one. Again, as I have no religion, I find such agitation to be either quite funny or fairly disturbing.
Another way to enrage the average Homo sapiens is to speak disparagingly of dogs. This one evokes more anger than belittling a native place or a religion. In fact, the love of canines seems to cross all place loyalties and all religions (or even lack of religion). If you speak ill of dogs to an atheist, you are likely to encounter just as much anger from that person as from a devoutly religious one. This leads me to wonder if love of all things Bowser is akin to religion. Very damned strange.
In short, if you want to start a fight, the comment most likely to instigate conflict would be:
“Your city sucks ass, and only a (fill in the religion) such as you would want to live there. And by the way, your dog should be put to sleep.”
Guaranteed to kick up some dust.
You guys amuse me.