I have seen that video and it is very funny. Also on the link ts posted they say they teach legal lawful use of force, but encourage stomping your grounded attacker.
Normally I hate attacking martial arts places. I mean, something is better than nothing. When I saw "legal use of force" though, and then went to their homepage and on prominent display is this:
Some say we teach Dirty Ju Jitsu. You are darn right we do! We teach you to…
✓ Eye gouge
✓ Bite
✓ Hair pull
✓ Fish hook
✓ Attack the groin
✓ Break the fingers
✓ Throat strikes and grab the trachea
✓ Clawing, pinching or twisting the flesh
✓ Kick the head of a grounded attacker
✓ Knee the head of a grounded attacker
✓ Stomp a grounded attacker
✓ Kick to the kidney with the heel
✓ Strike downward using the elbow
✓ Strike to the spine or the back of head
Well.. I just had to laugh. :icon_chee
Edit to add:
And then there is this gem..
Do you spar?
NO! Sparring as it typically applies to most martial arts training involves two students agreeing to a set of rules and a referee. While sparring does teach a certain degree of timing, distancing, etc., it does not adequately prepare a student for the likely range and angles utilized by aggressive street thugs. There are obviously no rules in the street. There are no referees. And, fighting is illegal anyway. So, training to spar will likely be viewed as training to fight in court and by law enforcement.