If this were a police state paranoid anti-government conspiracy theories would not be allowed to be posted openly online. And they wouldn't have handcuffed him, then tazed him, twice. They would have shot him once and carted him off.
Agreed. The cops acted in the only way they could. If they'd let the father go in, he'd have died too. As I say, it's a lose/lose situation with no good outcome for anyone. Not the kid who died, the father who lost a son, or the cops who were forced to stop him trying to save his life.
Odds are those cops are parents too. You can bet they didn't want to have to stop him, but what choice did they have?