Early 1970's- Black Power Movement had fizzled out:
was always relatively ill-defined & poorly organised
was unrealistic in thinking America was ripe for revolution
was sexist & alienated its female supporters
lost the white Liberal funding that supported the SNCC and the CORE before their switch to radicalism ( the SNCC excluded white members-1966, the CORE excluded them-1968)
attracted the hostility of the white authorities who pursued & silenced Black Power leaders