Be average looking. People are mean to ugly people, but behind their backs, people are mean to "hot" looking people too.
Everyone actually hates hot people.
It depends.. You can easily find 2 persons who think that the same girl is ugly for one while the other think she is normal or beautiful.
Besides finding that someone is ugly doesn't make sense to be mean for them.
Looking to the Hollywood actress, you will get another idea about them once they remove the tons of make-up and plastic surgery...