Yeah, you would. As long as Christians had the inutterable gall to consider any behavior you particularly wished to engage in unacceptable, you'd be pointing fingers and screaming, "Hypocrite! You're not perfect, so how DARE you claim to have a moral standard?!"
As for religious teachings, the Bible is full of instructions concerning the discernment of good behavior from evil, and even directions to rebuke your brothers when they stumble into sin. I realize that secularists have been trying for a long time to project their own warm, fuzzy, mealymouthed, ineffectual version of "niceness" onto Christianity, but you really shouldn't believe propaganda.
As Ann Coulter said, you don't need a religion like Christianity, which is a rather large and complex endeavor, in order to flag the message, "Be nice to each other." All you need is a moron driving around in a Volvo with a bumper sticker that says, "Be nice to each other." Being nice to people is, in fact, an incidental tenet of Christianity, not the main message of Christ. Christ's distinctive message was that people are sinful and need to be redeemed, and this is your lucky day because I'm here to redeem you even though you don't deserve it, and I have to get the crap kicked out of me to do it. That is the reason He is called "Christ the Redeemer" and not "Christ the Moron Driving Around in a Volvo With a "Be Nice to Each Other" Bumper Sticker".