You know what, you're right. I never really thought of that but a guy I went to high school with was Folk, and carried himself like that; never claimed he was in a gang or anything, etc. He's in jail now though for shooting someone.
This may be just as bad, but my cousin, who is not in a gang but was wearing a Raiders jersey at a party, got mistaken as a TRG member at a party(they thought he was the "Rascal" that beat up his little cousin or brother). Let's just say he was being chased by more than ~40 ABZ's.
There's probably more ABZ down here than TRG, but I hear more about TRG; mainly about one set: They actually invite TRG members from other sets to their parties, just to jump them and/or rob them.
Around here the Asian-gang thing is starting to die down(a lot are in jail), but you have new gangs, mainly those claiming "Bloods" coming up. I guess it has to do with the growth of the city.