The manifesto, if real is certainly something. 
- The Democrats and Republicans have both failed by handing the US to corporations  

- The corporations allow for uncontrolled migration which means the hispanic voters will replace the boomer voters  

- Also it will make the economic problems that arise from automation so much worse  
 
 - The attack is poorly prepared but a poorly prepared attack is better than no attack according to the shooter  

- Shooter writes he's not a white supremacist and it has nothing to do with any presidential candidates (including Trump)  

- Race mixing is bad and the US should be split in a confederacy with a state for each race  
 
 It sorta reads like a longform kirblar post