// Mair was a longtime supporter of the National Alliance, a once-prominent white supremacist group. In 1999, Mair bought a manual from the organization that included instructions on how to build a pistol, the center said. ... In all, Mair sent $620 to the group’s publishing imprint for titles including “Incendiaries,” “Chemistry of Powder and Explosives,” “Improvised Munitions Handbook” and “Ich Kampfe,” published by the World War II-era Nazi party, the law center said.
The Telegraph, meanwhile, reported that "a decade-old website posting identified Mair as a subscriber to S. A. Patriot, a South African magazine that was published by the pro-apartheid group, the White Rhino Club." //
It appears he had links to white extremists, and that tallies with what witnesses heard. Just as islamaphobia increases after an attack by ISIS, then this murder by a far right extremists has a detrimental affect on right wingers. It isn't fair, but thats public opinion.