Christians Evangelicals: explain to me why you tell the rest of us what we're doing wrong.?

I know the "God hates fags" portion of you are a minority(i hope) but it seems(to me at least) that most of you are constantly informing the rest of us that our actions are wrong and sinful. Doesn't Jesus go on about not judging others, that that's the "Fathers" job? Also everyone is sinful so it's basically the pot calling the kettle black. How then, do you justify these angry christian protests to others behavior?