In pic ...5254 where it looks like ‘paramedic’ man has his hands up, I can see the gun in his right hand...it kind of gets lost in the background. So he’s advancing on the guy on the ground with a pistol in his hand and loses part of his arm as a consequence. I see self-defense for this shooting as well. By my count, that just leaves one.
The first shoot was before when he was chased between some cars and trapped. The kid did everything he could to escape.