Draymond Green is never scared to speak his mind, even when the mics are around.
Josh Smith isn't the best free throw shooter of all time, and this wasn't the best free throw of all time. Draymond knew it as soon as it left Smith's hand, which is presumably why he felt the need to shout "HELL NO" in that moment.
Draymond Green is a national treasure and we must protect him at all costs.