Tucker Carlson backtracks after peddling a conspiracy theory cited by NY mass shooting suspect

Fox News host Tucker Carlson has pushed the racist “great replacement theory” on television more than 400 times. But after the conspiracy theory was cited by the Buffalo shooting suspect in his online manifesto, Carlson now insists that he does not know what the conspiracy is and that “the left” is responsible for pushing it. In this special report, MSNBC’s Ari Melber calls Carlson out for his hypocrisy, pointing to footage from Carlson’s own show as evidence, and highlights the double standard in his reporting of incidents of gun violence.