Nick wrote two excellent posts at his bloghttp://ilovefranklinave.blogspot.com/
which is dedicated to Brooklyn New York City in general, and to the Franklin Avenue Street there in particular.
The first post (titled: Whose symbol? Star of David in Crown Heights) mentions
1. R7 inside a Star of David representing African-American gangs founded originally in Chicago (Folks gang) and Los Angeles (Crips gang).
2. Blue (Crips gang) Star of David juxtaposed with a skull
3. Gold six-pointed star and chain representing also African-American gangs.
Nick brings possible reasons for the spread of the use of the six-pointed star by gangs:
1. To honor David Barksdale, the Chicago gang leader who founded the Black Disciples, and who died in 1974. He was Dubbed "King David" by his followers.
2. African-Americans moved into formerly Jewish areas, which had already Stars of David on different locations.
Nick’s second post (titled: Stars over Crown Heights) mentions artist Kerry James Marshall who researched the adoption of the Star of David by gangs, and who added another possible reason for this phenomenon: its usage by Rastafarians.
Note: I previously showed numerous examples of Rastafarian stars on this blog.
Picture is courtesy of Nick
Copyright: Nick 2009
