In the world classy people like Trump live, you don’t make jokes of people in the crowd without letting them have a chance to joke back. Such “jokes” are really considered insults. People with class that behave in such a way at such functions should expect to receive severe retribution on account of their bad behavior. Smarter people with class that let their manners slip, will make an apology either publicly or privately very quickly.
This is just about as classy as haranguing the Supremes dueing the State of the Union. Extremely low class, bad manners.