Lots of rumors that he was associated with Antifa, but still looking for hard confirmation.
According to posters on ZeroHedge, his girlfriend holds Australian citizenship, but she is an Indonesian Muslim.
Also, the woman (Marilou Danley) is said to have been married to a moveon.org extremist before she hooked up with this mass murderer.
Marilou was married to far left extremist Geary Danley (fan of moveon.org, dailykos, Al Franken, etc on his facebook), then divorced him and married another far left extremist, who was the shooter, Stephen C Paddock.