The WaPo story made no mention of political party.

Do we say "Democrat guy" when referring to the Orlando shooter? He actually was a Democrat. James Holmes who shot up the Colorado movie theater -- also a registered Democrat and even volunteered for the Obama campaign. Andrew Stack who flew his plane into the Austin IRS building -- was a supporter of communism. John Patrick Bedell who shot police officers outside the Pentagon in 2008 -- registered Democrat and subscriber to the 9-11 "Truth" conspiracy, not to mention an extreme hater of Bush/Cheney.

My point is that assuming facts not in evidence is exactly the problem. Now everyone who tends to agree with anti-Republican sentiment has their view reinforced by your own fake news. It works both ways. Fake news isn't a 'Republican' thing any more than it's a 'Democrat' thing. Plenty of fake stories circulate in places like Marin County about the 'vaccine conspiracies' or how this political or that has secret deals with "big oil" or whomever.

Promoting an unproven narrative of a "Republican" shooter IS fake news unless there is actual evidence otherwise.