"They pumped a load of bullets into him". Yes, while he was chucking grenades around and carjacking people and shooting at the police.
I feel pretty uncomfortable that he's only nineteen too (though I'm guessing it's his older brother you can blame there, for exploiting his youth and vulnerability to being led way, way out of his depth), and last night while he was being hunted I couldn't help but empathise a bit with how terrified and maybe full of regret he might have felt.
But it's ridiculous to blame the police for the fact that he was injured in the events that he and his brother set in motion. The police did an amazing job, at great risk to themselves, and the kid ended up in the hospital instead if the morgue. What do you think they should have done differently, exactly?!