"The carnage has renewed a decades-old debate about how to end the horror of U.S. school shootings, with many Texas political leaders once again calling for heightened school security measures. But others, pointing to devastation even on campuses that have invested heavily in security, said that such a singular focus could not stop a committed killer with access to weapons — and that such efforts might actually provide a false sense of safety in the absence of gun control regulations and more robust investments in mental health."I’m tired of Republican talking points about "hardening" schools and militarizing police forces. We have already done those things and they do not work. Removing military assault weapons from civilians is something new we need to try.