Racist chants. Nude photos of unconscious women. A criminal investigation into hazing.

Fraternities around the country seem to be coming under fire as never before over behavior that would shock the frat boys of "Animal House."

Despite a major national push to reduce drinking and sexual assault on campus and increase diversity, some fraternity chapters have failed to clean up their act. Universities — and the fraternities' national offices — are quickly punishing the offenders amid yet more promises of reform.

Some critics blame popular culture, saying it is making fraternities essentially ungovernable.

Defenders say that fraternities do a lot of good work and hold members accountable for their behavior. They say the focus on fraternity misconduct is misguided.