Final answer:
Los Angeles is the gang capital of the US and possibly the world due to its high level of gang activity and a complex history with gangs.
Step-by-step explanation:
The gang capital of the US (and probably the world) is Los Angeles. Los Angeles has been known for its high level of gang activity, particularly in areas such as South Los Angeles and East Los Angeles. The city has a long and complex history with gangs, including the notorious Bloods and Crips.
Learn more about Gang activity in Los Angeles