No reason has been given or details offered on the shooting other than that the police are calling it a protest against Trump. That's not TDS, that's a mental issue that should be seriously and definitively dealt with.
But there's another reason why it can't be attributed to TDS - and that's that there's [i]no such thing.[/i]
The origin of TDS is traced back to the late Charles Krauthammer, who invented the term "Bush Derangement Syndrome." Krauthammer was an attorney, not a psychologist or mental health professional of any kind. He was coining a pattern of behavior among opponents to Bush, probably tongue in cheek.
Of course, Trump appropriated the phrase for himself because, well, Trump. It's a non-existent urban term that means nothing.
@daisymay If he's mental or a felon then no guns are supposed to be sold to him in Oklahoma, but the thing is that it's almost impossible to find information on a person's mental status.