[flamberge]

Are you required to comply if you’re not doing anything illegal and some random stranger who is clearly not a cop demands you put your hands in the air?

If they have a gun pointed at you, it might be prudent to comply.

[JayGalt]

Problem is they did comply. One put his bb gun on the pavement, a second was on the ground w/Meyers straddling him. The third had his hands up to show they were empty. He lowered one hand momentarily and Meyers blew him away. Reported as per video.
Meyers was trying to “act like a cop” w/o training, w/o evidence of a crime and without authority.