https://www.looper.com/1597115/martin-lawrence-saturday-night-live-appearance-nbc-ban/

Martin Lawrence's "Saturday Night Live" appearance in February 1994 led to NBC banning him from the entire network. Here's what happened.

A quick google search and you can actually read the transcript of what Martin's monologue, it's actually not that offensive I mean seriously there have been far worse things on SNL ranging from horrible guest hosts to horrible skits.