People on Reddit are doing something similar. There is a post that Chris was a Nazi fanatic who supported the IRA.
There will be a lot of misinformation that comes up since 4chan is involved.
The MySpace page features a photo of Harper-Mercer holding a gun and smiling into the camera. The profile includes images of pro-Irish Republican Army propaganda.
http://www.thedailybeast.com/articles/2015/10/01/umpqua-gunman-id-d-as-chris-harper-mercer.html