RIP to all the victims including the hero cop who entered the kill zone to protect others. Sheriff's Sgt. Ron Helus- you are an example to others of how to protect and serve. Ventura County Sheriffs dept are a bunch of good guys / gals.
I grew up out there and know the area well- essentially my childhood neighborhood. This is a very nice part of California and swings right in many precincts- many if not most of the voting precincts in T.O. voted for Trump. Back in the day, we threw welcome home parades for returning Vietnam soldiers and POW's. You know what happened to the returning vets in Los Angeles and San Francisco. Reagan is buried in this area. As a kid my friends and I carried our rifles and walked to and from open land without so much as a dirty look from anyone.
The reason I'm providing the background is to establish a feel for the demographics. Add in a huge 'country night' theme at a local bar and you now have Las Vegas II. This location and its clientele were targeted, plain and simple. You can see the pics of the survivors to know what type of people were targeted- again.