Tonight on The Last Word: Trump lawyer Evan Corcoran testifies in the classified documents probe. Also, Georgia Republicans are targeting prosecutors amid the Trump probe. Plus, The Texas Tribune reports the police feared the Uvalde gunman's AR-15. And Parkland parents are forcibly removed and arrested at a House hearing on guns. Rep. Eric Swalwell, Harry Litman, Georgia State Rep. Tanya Miller and David Hogg join Lawrence O'Donnell.