And the DUmmies portrayed that psycho as a noble hero standing up for gay rights, portrayed the churchgoers he targeted as evil fundy fanatics who all deserved to die, and portrayed the woman who stopped his rampage as a bloodthirsty lunatic.
IIRC, the guy had some real head problems, but I hadn't heard that he was into gay "rights". Not that facts necessarily matter to DU-folk. A year or so prior to the shooting, the kid, who had been raised as a Christian, attempted a Discipleship Training School at the Youth With A Mission base in Arvada.
A DTS has 3 basic elements: 3-4 months of intensive teaching and counseling, plus on-base and community service; followed by ~2 months of outreach, usually outside of the US. Before a DTS student is allowed to go on the outreach, the DTS school leaders have to approve their being part of the outreach team.
The kid was not approved, due to issues during the lecture/service phase. And that was his tie to and resentment toward the Arvada YWAM base.