Jerry Seinfeld took aim at the "extreme left" and political correctness, which he said have ruined television comedy. During an appearance on David Remnick's "The New Yorker Radio Hour" the comedian expressed his discontent while discussing how "serious aspects of the world" affect him and his comedy. "Nothing really affects comedy," he said, according to the Daily Caller. "People always need it. They need it so badly and they don't get it. It used to be you would go home at the end of the day — most people would go, Oh, 'Cheers' is on, Oh, 'M*A*S*H' is on, Oh,...