Green’s Dictionary of Slang

1. (US) a black person.

1972		B. Rodgers Queens’ Vernacular 62: a black man [...] boogaloo.
1981		National Lampoon Sept. 51: No boogaloos is an instant thing you notice in Switzerland [HDAS].

2. attrib. use of sense 1.

1972		B. Rodgers Queens’ Vernacular 63: Negroid [...] boogaloo.
1990		J. Ellroy ‘Gravy Train’ in Pronzini & Adrian Hard-Boiled (1995) 499: I cruised the bad boogaloo streets.