@CNN: Years before a man killed 17 people at a Florida school, his mother repeatedly called police to help deal with his violence, police documents show https://t.co/ZbUBFId7U5 https://t.co/wLHnbxW7cN

@CNN: Years before a man killed 17 people at a Florida school, his mother repeatedly called police to help deal with his violence, police documents show https://t.co/ZbUBFId7U5 https://t.co/wLHnbxW7cN