Diego Luna guest-hosted Jimmy Kimmel Live on Monday night and delivered a powerful monologue on the importance of immigrants amid Donald Trump's "authoritarian policies."

"The multiple times that this country has had to rebuild itself, immigrants were always there to pick up the slack," the Mexican actor-director said on 'Jimmy Kimmel Live!.'

Diego Luna took over as guest host for 'Jimmy Kimmel Live!' and slammed Trump and his immigration policies during his opening monologue. Luna opened up about the community he built in L.A. after first coming to the U.S. when he was 20, sharing personal stories from his time in the City of Angels over the years.