2013 Boston Marathon Bombings - Louis C.K.'s take on Rolling Stone

For reference, he said in a routine "Like I remember once I was doing a gig in Oklahoma City, which is an awful place. Just awful. Full of just shitty, fucking dumb people… Oklahoma City is a bunch of redneck dumb cunts and I hope they are all dead. I think someone should, y'know, light a bomb in front of a federal building there." https://www.youtube.com/watch?v=lqL_sNqni-o

To be fair, six years later he said that he "kind of regrets" telling that joke.

Yes, you probably are.