Released murderers, violent ex-boyfriends who threaten to murder, convicted pedophiles, and violent schizophrenics all represent a clear and present danger to society. Many heinous crimes would simply not occur if these people were isolated from the general population. Anti-stalking laws, restrictions on released sex offenders, apprehended violence orders, and three strikes laws go some way to addressing the problem. But the key step is to remove unsafe persons from decent society through the utilization of unsafe persons colonies (described later in this chapter). Such measures are not acts of retribution or punishment any more than the caging of a lion at the zoo. Rather, they are precautionary measures designed to protect society from a known danger.