The facts, as they trickle out, paint a different picture.
First, no one has determined the actual motivation for the shooting. By all accounts the young man is mentally deranged. Neither the right nor the left has a monopoly on crazy.
Is the guy a leftist because he had Mein Kampf and A Communist Manifesto in his library and because he has an apparently satanist shrine at his home? It is a right-winger, because he ranted about going back to the gold and silver standard for money?
The left wing media (which is almost all mainstream media) is disrespecting the dead and the injured by its assumptions that political speech opposing left wing lunacy is somehow to blame. The left calls it vitriol.
For the true vitriol, to the left face, harch!
In the meantime, the gun controllers can be expected to use this tragic event as a springboard to take away your Second Amendment Rights through stealth legislation.