We’re learning a little bit more about Bryce Williams’ employment history as well as new details about the “manifesto” he sent to ABC News last night/early this morning outlining his deranged motives for today’s attack.

First up, ABC News reports that Williams had been in contact with ABC on numerous occasions both prior to and after today’s shooting:

And Williams wrote in the “manifesto” that his actions today were partly in retaliation for Dylann Roof’s shooting spree at Charleston church earlier this year:

The killers behind the Virginia Tech and Columbine massacres were referenced as well:

Wonderful.

More from ABC News:

In an often rambling letter to the authorities, and family and friends, he writes of a long list of grievances. In one part of the document, Williams calls it a “Suicide Note for Friends and Family.”

*He says has suffered racial discrimination, sexual harassment and bullying at work
*He says he has been attacked by black men and white females
*He talks about how he was attacked for being a gay, black man

We also learned that Williams had previously sued a television station in Tallahassee, Fla. where he worked, again claiming racism was a factor:

And when he was fired from WDBJ in 2013, it didn’t go well:

Tragic.

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Related:

WDBJ shooter tweeted his motive and posted a POV video of the murders

‘Mega-FAIL’: DeRay McKesson deletes tweet, backpedals after realizing #WDBJ shooter not white

ABC News acknowledges receiving lengthy ‘manifesto’ purportedly from #WDBJ killer