If you saw someone getting sucker punched by some guy for absolutely no reason, what would you do?

Just asking because I just watched some videos, there's like elderly Asian people getting sucker punched for no reason. The assailant walks away as if nothing happened, or they're laughing at the victim. Bystanders didn't really do anything to help in the videos.

I'll tackle the assailant and try to subdue him.
I don't want to risk my life, but I'll call 911 for the victim though.
I won't subdue the assailant, call 911, or assist the victim, I'm going to be all up in the assailant's face to record him while being rowdy.
Man, it must suck to get sucker punched! But it's not my business, so I'm going to be on my way as if nothing had happened.
Yo, this the moment I've been waiting for my whole life! I'm going to quickly and excitedly whip out my phone to record while shouting "world star", giving shout outs to my homies, and etc. zoom in and out on the victims bloodied face and crack jokes about it.
Select gender and age to cast your vote:
If you saw someone getting sucker punched by some guy for absolutely no reason, what would you do?
Post Opinion