The people who are not like us are bad.
One of several derogatory terms named after groups of bad people

One more for your list:

The Yiddish word "goyim," meaning Gentile/non-Jewish, is generally used disparagingly, but it comes straight from the Hebrew "ha-goyim" and means "the nations," perhaps more specifically the "other" nations. No less and no more. A completely neutral denotation in the beginning, evolved to acquire a derogatory connotation.