TDS of our local fools aside he sounds like a mixed up young person. He had just gotten kicked out of his parents house for behavior issues and doing things like drugs and spending all his money on prostitutes. His parents were also upset that he didn't get a job and thought he needed to be scared straight with reality so they kicked him out hoping the experience would convince him to stop drugs, stop spending money on hookers, and convince him of the need to get a job and earn a living.
The guy clearly was not mentally well and he seems to have blamed the hoomers for his plight or at least focused his rage on them. Politics does not seem to have played any factor. It also doesn't seem to be racial and instead the Asian Message Parlers (AMP) is just the most common prostutition venue in many cities as Backpage and Craigslist personals has been shutdown.