If the manifesto is real and he writes that he believes we are being invaded then wouldn't you go to shoot at border hoppers? Instead he goes into a wal-mart where he may be hitting citizens. The manifesto doesn't correspond to the action, imo.  It also feels like they changed the template of the Christchurch shooters manifesto slightly. It has the same sounding language and format style based on what I remember reading at the time. I'M going to compare. Feels like it was plagiarized.