Here we are again, watching with horror as another mentally ill individual shoots our fellow citizens. Crazies with repeating weapons can do a lot of damage, kill a lot of people. This act doesn't appear to have had any ideological motivation as we understand the concept, as for instance the Fort Hood shooter very clearly had.
Let's remember how we came into this sad state. Back in 1960s and 70s, the days of One Flew Over the Cuckoo' s Nest, people on the left came to believe in a "right" to be out of touch with reality, to be "different." People on the right discovered how much money they could save by agreeing to close the detested mental hospitals.
Before that time, the Navy Yard shooter might have been warehoused in a mental hospital as a paranoid schizophrenic. Two weeks ago he was buying a shotgun and planning to take revenge on the society with which he felt out of step. The fault is ours for being too cheap, too concerned with individual rights to have places to separate the dangerous ones with voices in their heads from the rest of us.