How many more school shootings will it take to put an end to social outcasting?

When will people get it through their thick skulls that the reason behind the school shootings is that. instead of social outcasts who are constantly picked on getting the psychological help that they need, they are picked on all the more and told by school authorities to turn the other cheek instead of punishing the people who thoughtlessly provoke them to such extreme anger and frustration that they snap?