In Season 1, Becker gets smeared by a journalist in the diner who misconstrues his comments to Jake and to an Asian taxi driver who had just crashed into him as racist. Despite Margaret telling him to let it blow over, when Becker hears Tetzloff attacking him again on the radio, he goes to the station to confront him. He not only chews out Tetzloff for being a dick and insults both the readers who believed his column and the station's listeners (which the DJ actually agrees with), but also turns the tables on Tetzloff when he points out that he made his own politically incorrect assumption about where Becker's neighbour comes from.
Becker: You took a private conversation, you imbued it with racial overtones, all under the guise of political correctness. You know something, that concept was meant to make us more sensitive to each other but instead all you did was use it to perpetuate some ugly stereotypes!
Tetzloff: (stammering) Well that certainly wasn't my intention.
Becker: Yeah, well, that's what you did.