Until Parkland, I doubt any of them had ever thought about gun control or school security for more than a nanosecond. They just assumed they were safe. Now that they know that they weren't as safe as they thought, they're latching onto whatever the talking heads on the telly are saying will make them safe. The Constitution and the Bill of Rights aren't being taught in schools any more, so the constitutional conflict engendered by banning guns isn't something they're even aware of. And kids today don't have the attention span to sit back and consider that. Everyone wants a quick and easy "solution," and they don't have the breadth of life experience to understand that complex problems cannot have simple solutions, or 100% guarantees.