OK, I've just watched the video. This situation was ludicrous.
- looking at the body language of the participants as the car approached, this probably could have been defused with a simple apology - there were words being flung but little more than that
- those two wanted to fight. They rolled up their sleeves and squared off.
I'm going to refer to the participants as BG, MG#1 and MG#2 (black guy, mexican guy, etc.). Before I answer, let me state my unequivocal opinion:
BG is an ass and he escalated that situation, he needs to man up and admit that he made a mistake and that he probably deserved the kicking he got. He should think himself incredibly lucky that none of his opponents produced a weapon. If he came to me to be taught I would turn him away.
To answer the question of "If you were BG, how would you have handled this?":
- he had ample opportunity to apologise and walk away. He admits he made the driving mistake, he should have been man enough to say sorry to the other guys
- he should never have tried to kick MG#1. His kick were very sloppy and he didn't retract his leg quickly, he left it hanging out there for his opponent to grab
- once he had MG#1 in a head lock, he suddenly found he had no hands to deal with MG#2 who was simply stepping in to help his mate
There are numerous ways to lock someone up and still remain capable of defending yourself. You can escalate your level of defence as the level of the attack grows - this means if you have multiple attackers you may need to start disabling them one by one.
This was a quite expansive and long fight - they had plenty of area to fight in, and it was a clumsy brawl more than a fight. If you are trained you should look to end this as quickly as possible. Your observations about taking out the alpha attacker and keeping someone between you and the other attackers is quite correct. Your observations about never kicking, going for the eyes and being quite fierce are quite incorrect.
- "being fierce" is only applicable if you are not trained and it is the only weapon you have.
- "going for the eyes" (testicles, whatever) is also a bad approach. While it may work, your chances of pulling it off are actually quite slim and you should never concentrate on just the one target or vital point
- kicking is a legitimate way of striking, you simply need to be prepared in case it doesn't work (which is the same for any type of strike you use). The only time you should never kick is if you kick like a retarded monkey, or your opponent is already on the ground and the fight is over.