Fuck this scumbag, heart goes out to every family and community members affected by this disgusting pile of trash. Using these events to try and bash the other side regardless of the shooters supposed leaning is generally messed up.
As far as politics this person seemed to have been all over the place. You can't lay the violence of an individual at the feet of others. I think that is something we all know. We can say that everyone that performs such act of violence is crazy, but that's a pretty shallow take. So many people have mental health problems and never lash out like this. This act seemed planned and the individual seemed to hold CT or anti government views. They seemed to pick the target because of personal connection and impacts the attack would have.