Dont know if you’ve seen this, but over here you get the “swarm”. I’ve seen it happen on not such a large scale as this, more 1 or 2 guys with 10 - 15 attacking them…then where’s your distance game?
As a foreigner if you get in a fight on the street here, punch and run…and fast…TIC…this is china baby…
http://www.youtube.com/watch?v=1X4FGs1033c&feature=related
http://www.youtube.com/watch?v=-geUbjfAP0U - hair takedown at 38 seconds is brilliant
in ‘football’ [soccer] matches we get that on the main streets every weekend 
I used to do security at a pub directly opposite the chelsea stadium… one night we watched a police horse charge against a visiting team called millwall …it was like a monty python sketch…couples drinking in the bar with all hell breaking loose outside the windows , cops on horseback going past the windows , guys running into the pub , we knew as locals asking us if they had been stabbed in the back as they ran away from the mobs …fun ? not :D…but its the norm, thats why you dont want to ever go down grappling . you get a group /mob just kicking you, because you have on the wrong ‘colors’.
classification…utility
For classification purposes one can define ranges for techniques. In fighting there is only ONE real range… The range you need to be in to make your art work..whatever that art may be.
Love, peace & Chitlin’ Grease,
~Cg~