If GZ was attacked (and he was clearly injured) he had every right to defend himself. Bur since there is a trend of discrediting or disbelieving everything and anything favorable to GZ, it is pointless to point out that there was a witness who saw TM pummeling GZ, the police released information consistent with GZ's account, and he was injured. I think SYG clearly applies here. Maybe the Feds will unearth something that has been missing in this case but I just doubt it. Maybe, just maybe GZ told the truth.
There would NEVER have been any encounter in the first place if GZ had listened to the instructions of the police dispatch operator - WE DO NOT NEED YOU TO FOLLOW HIM - GZ took the law into his own hands and stalked an unarmed youth. GZ is 100% at fault, 100% the aggressor and 100% the one to "start" everything! jmo, imo and all that jazz