no clue as of yet what his motives were. I guess there was a FB post were he called Trump a dick for his immigration policies. The MSM loses the narrative that Trump is to blame. Yes, he "looks" white as you said but some will find that offensive. Depending which group finds it offensive will determine if it can be used as a talking point.
This race baiting can be hard work but the MSM and Liberals made a profession out of it. These 2 shootings just give them fuel to keep it burning. Even though the first one had to do with sex addiction and this last one is yet to be determined. But never the less, they were racially motivated.