brawl breaking out on a southwest flight a day after that midair attack on a united plane. we hear from a passenger who helped take the suspect down. the new storm threat in california as the death toll grows after record snow. we re tracking it. fox news under fire. president biden blasting house republicans for giving tucker carlson the video he cherry-picked to falsely portray the january 6th attack as peaceful and the newly revealed text messages. what carlson really thought about donald trump after the election. and on this international women s day, the all girls team of young scientists who fled their home and are wowing the world. announcer: this is nbc nightly news with lester holt. good evening, and welcome on this wednesday night. rarely has an american police department, its practices, its culture, its performance been so thoroughly and broadly condemned. the u.s. justice department announcing results of its nearly two-year-long review of the louisvill