In all likelihood the guy should have watched the Chris Rock video about how not to get your a** kicked by the police.
The stress on his undergoing a diabetic reaction implies his actual actions may have justified this reaction, but the cops should have cut him extra slack because he was sick.
AFAIK, diabetic reactions don’t make one violent or aggressive.
I’ve known a couple diabetics who indeed did get aggressive when bottoming out. Could avert things by demanding they check or eat when they started getting rude and nasty...if they’d actually listen.