As for his son, I blame the father for taking him with him to live in an Al-Qaeda stronghold, and effectively using him as a human shield.
His main activity was recording videos in which he expressed his ideas. If he was thought to have committed other crimes, he had the right to be tried for them.
> As for his son, I blame the father for taking him with him to live in an Al-Qaeda stronghold
That didn't happen. IIRC, he was killed at a dinner party. We're not even certain who it was the US was trying to kill during that strike.
> If Anwar al -Awlaki had felt his life was in danger, he could have just turned himself in to a US consulate and asked for his legal rights
Hahahahaha, that's a good one.
There are also legal arguments in favor of this position, but past experiences suggests I'll do a lot of typing and linking to no particular end, so I'll confine myself to quoting Justice Holmes: the constitution is not a suicide pact.
This is understandable - if Americans are being attacked, their attackers should be killed. Figure out who they are later. But in this case there was no immediate danger. And to steal from Stalin, "how many divisions does al-Awlaki have?" I would love to hear the evidence against al-Awlaki, but sadly the trial was dispensed with, not to mention the subpoena.