Lena Luthor is announcing the rebranding of Luthor Corp when the event is attacked by the assassin John Corben in episode 2x01 "The Adventures of Supergirl". Lena gives a press conference about the sick children and someone takes a shot at her in episode 3x05 "Damage". Ben Lockwood hands out anti-alien fliers before the terraforming attack and months later he spies Dean Warren while talking to a crowd in episode 4x03 "Man of Steel". Appears in 1 more episode.
Outside the White House, protestors on both sides begin to read Kara's article on Lex's deception in episode 4x22 "The Quest for Peace".