Why? I won't. There are obnoxious privileged brats in Brazil, in America, in Russia, in Hong Kong, in India. I'll call all of them out, unhampered by US neuroses.
Cultures are different, such is the richness of our wonderful diverse world. So people behave differently. 'Rich, White, Rio' is a different sociological category than 'Crazy Rich, Chinese, Singapore', each having their own distinct behaviour sets. And when a behaviour clashes with common cultural values elsewhere, in our example, loud chanting in a theatrical environment, then it can be named and it can be adressed.