Original:  Follow Binkley on Twitter at @cbinkley --- Find all of AP's coverage on the walkouts and the Parkland, Florida, shooting at https://apnews.com/tag/Floridaschoolshooting
Updated:  --- Find all of AP's coverage on the walkouts and the Parkland, Florida, shooting at https://apnews.com/tag/Floridaschoolshooting