A simple visit by the police may have changed history.
***
... and what would the police say & do on such a visit?
They can take him in for 72 hours for determination by a counselor. That is why the sheriff in the Giffords shooting was culpable. They knew that dude was unhinged and did nothing to stop it.
Oh and BTW..the last meeting my wife attended, they determined that there are an estimated 3 million of these out on the streets.
We all can expect more of this, especially since they are not working and have all that time to ponder in their minds...if you know what I mean.
A lot of these people are actually at the genius level.