Perhaps it should be:
Should parents with ill-behaved children be allowed in art galleries?
Answer: No.
Good luck with sorting the well behaved from the brats. Their parents obviously didn’t think their darlings were doing anything wrong and will of course scream discrimination immediately.
My friends, who travel several times a year, have metnoined many times that the children of tourists from far east Asia are very disruptive on tour buses, in museums, restaurants and on cruise ships. This surprised me because I tend to think of orientals as well mannered - guess things have changed — a lot.