He's not doing whatever he can to not get murdered. He's doing whatever he can to expose ICE's hypocrisy and prove that they are the lawless murderers.
By not loading his weapon he has made it clear that there is no circumstance in which he would take another's life. Not even to defend his own.
Is he putting himself at grave risk? Yes. Absolutely.
Is there a way to accomplish the same thing without risk? No.
That man is a definitional hero.