This made me laugh out loud sorry.
First off its not so simple that omg violent games have led to more school shootings -blaming games is just a way to avoid looking at the whole picture including the parents lack of paying attention to the child and childs behavior becasue I am fairly sure kids have some sign of "off behavior" before shooting the school up
two have fun banning your kid from friends like that lol I can tell you my mom tried that with me as a teen and it led me to not talking to her about anything and leaving home at 15- banning kids just leaves them to seek out the banned item even more.