That's all supposition, but you can connect the dots.
From his Facebook profile,
He is employed by Child Protective Services.
He wants to be a woman someday; and he is a Male looking for Men.
The accomplice being sought is described as a "white male in his fifties".
No proof at all, but my first guess would be "queer as a three-dollar bill", drugged up and egged on by his mysterious accomplice (probably another Social Worker homo from CPS).
The Facebook profile is likely FAKE, I saw a claim it didn’t exist until after the shooter’s name leaked.
The MySpace (now removed) and YouTube are real.
That was a FAKE facebook page, as were several others.