I watched segments of the rallies, and I didn't hear one word about the shocking failure of the local police, the cowardly conduct of the cop at the school, the FBI's baffling failure to follow up on clear leads, the local program that discouraged the police from arresting Cruz on multiple occasions, the failure of his legal guardian to take the rifle from him, etc., etc. Nope, it was just one speaker after another bashing guns and urging that guns be taken from law-abiding people who had nothing to do with the Parkland shooting.
They were urging the same kinds of gun laws that Russia and China have. Great.