oddly enough what supports this theory the most IMO is that one of the first and only "facts" the media presented about this guy was that he supposedly scouted out multiple locations for this shooting... the one they always use as an example is some rap concert.

IMO that is being fed to the public as a distraction to attempt to take focus away from the fact that this was a country music concert being shot up shortly after trump won. He was targeting a country music concert because most country fans are trump voters... mockingbird intentionally presents "evidence" that he considered shooting black people so people would be less likely to consider the actual motive.

to this day if you mention that there are pics of him in a bernie shirt and that he was targeting trump supporters the first thing people say is "but he can't be anti-trump because he almost shot up a rap concert".

again, why have we never seen the note that you can clearly see sitting on the nightstand next to the blown out window in the scene photos...

because they can never publicly admit that anti-trump propaganda inspired this, it doesn't fit their narrative.