Joy Reid leads this episode of The ReidOut on a very big night in news. Today in downtown Kansas City, Missouri, a Valentine's Day mass shooting erupted as the city was celebrating its third super bowl title in five seasons. Additionally, special counsel Jack Smith has filed his brief with the Supreme Court opposing Donald Trump's quest for total immunity. Plus, Republicans are licking their wounds after yet another election defeat last night. Also, Maryland Sen. Chris Van Hollen joins Joy after his powerful floor speech accusing Israel of a "textbook war crime" in Gaza. All this and more in this edition of The ReidOut on MSNBC.