Yeah, cuz man, my way of life of molesting children, raping women, killing babies, committing incest, etc. shouldn't look bad? Examples please.
Warning: spoilers.
They had an episode about polygamy. They made it sound like it was this totally freakish thing. Then it turned out that one of his wives killed the other out of jealousy, proving that polygamy is bad.
There was an episode about a girl in her 20s who, due to a birth defect, looked like she was 12-14. They made her boyfriend out to be a total sicko, because he was essentially molesting a child, even though he wasn't. He ended up being found not guilty, but they still portrayed him in an extremely negative light.
I saw an episode recently about a Jewish community that kidnapped a kid. They portrayed the Jewish community in a negative light, showing how one of the members would rather be thought a paedophile than show that he had a girlfriend. Even though the episode ended up having absolutely nothing to do with that guy, it was a sidestory that did nothing but reflect badly on the Jewish community.
Those are three instance that I've noticed, the first two probably being the best examples. Keep in mind that I don't really watch this show so I've only seen maybe 10 episodes.