Tough call for any officer to determine if or not an individual is drugged or has mental conditions when a lot of drug addicts have mental conditions in the first place. Both of which often have unusual strength.
If or not the guy was a menace or not really isn't relevant, since he was argumentative and resisting from the start, then tried to run and also apparently got his arm loose and went for the officers gun.
Recalling also the fellow who called in saying this guy was acting and talking weird....adds to the defense of the officers as well for they also saw and heard this.
Your father was wise saying
“never attempt to flee or fight the police”.....this fellow would still be alive had he been instructed so perhaps.
Just speculation, but I would guess that McClain was classified a ‘high functioning’ autistic by Social Services. He got a nice disability check each month and subvented housing and he could do the everyday minor tasks. His neo Ninja garb is typical of the foolish things these type mental disabilities cause. His tragedy was he crossed paths with ‘Juan’ who he freaked out. Juan sounded high also. Great country we have.
I don’t think he was autistic, which btw, does not mean they don’t have common sense and intellectual understanding..