Saturday Night Live segments took aim at gun control policies and Trump's behavior.
Jason Aldean performed "I won't back down" by the late Tom Petty in tribute to the Las Vegas victims.
Watch all of the best moments from last night's episode of 'Saturday Night Live' for the Season 43 premiere.
The season 42 Saturday Night Live finale will end It’s most watched season in 23 years.
Bobby Moynihan is leaving Saturday Night Live.
Watch Haim perform their song "Want You Back" on Saturday Night Live.
Melissa McCarthy returns as Sean Spicer for Saturday Night Live.
Watch LCD Soundsystem's debut performance on Saturday Night Live
Watch Harry Styles play Mick Jagger on SNL
Watch Octavia Spencer poke fun at "Hidden Fences" in SNL monologue.
At the Saturday Night Live afterparty, Questlove caught footage of Dave Chappelle celebrating his time as host by emotionally signing Radiohead's "Creep."