Time magazine came under criticism for altering O. J. Simpson's mug shot to make his skin appear darker and then using that altered photo on its cover. Racism is the belief that certain races are better than other races.
Sexism is the belief that one sex is better than the other.
Homophobia is heterosexual prejudice against gays and lesbians. These forms of prejudice are widely recognized. We need to realize that there is also religious prejudice, the belief that certain religions are legitimate and other religions are not. The recognition of all forms of prejudice is important, because prejudice dehumanizes the stigmatized group so that violence against its members becomes socially acceptable. But the only thing these groups have in common is the prejudice directed against them by the wider public.