After the fire is lit, Bushnell shouts ”Free Palestine!” several times, then just screams in pain, managing one last ”Free Palestine!” before going completely silent but still upright, shuffling in place in a tense circle as he burns. It's after he gets quiet that at least one cop (briefly sounds like there could be several) starts yelling, commanding the inferno over and over to "get on the ground" about a dozen times that I can count. He stops when Bushnell finally crumples to the ground.
Somebody else is yelling, "Fire extinguisher! Who's got a fire extinguisher! Jesus Christ! Hey! Get the fire extinguisher! Fire extinguisher!" and runs into the frame with the cop right behind him, deploying a small extinguisher that knocks down the flames but doesn't totally put the fire out. The cop scoots up in combat stance with his gun trained on the motionless and smoldering man as if he might leap up and attack at any moment. He just hovers there hopping side to side to stay locked on target, barely glancing at anything else, not saying another word, while the other first responders rush back and forth past the muzzle of his weapon (at which point my heart is in my throat hoping nobody drops a damn acorn) trying to finish off the fire.
That's when somebody out of frame shouts, "I don't need guns, I need a fire extinguisher!!" which makes me wonder how many more cops were also there with their weapons out.