Jimmy Fallon is addressing his impersonation of Chris Rock in a “Saturday Night Live” sketch from 20 years ago in which he appeared in blackface. Fallon issued an apology after video and criticism of the sketch, which originally aired on “SNL” in 2000, resurfaced on social media. Fallon was a cast member on “Saturday Night Live” from 1998 to 2004. Chris Rock had starred on “SNL” from 1990 to 1993. In the sketch, Fallon appeared as Chris on a talk show hosted by Regis Philbin (played by Darrell Hammond).

Fallon wrote in a tweet: “While on SNL, I made a terrible decision to do an impersonation of Chris Rock while in blackface. There is no excuse for this. I am very sorry for making this unquestionably offensive decision and thank all of you for holding me accountable.”