How does the Film put across a sense of Collective Identity?

Sapphire, as a film helps to put across a sense of collective identity as throughout the film people are seen more a collective rather than individuals. From that what I mean is that all black were generalised in a negative way. In the film it was insinuated that all black individuals are bad, which obviously wasn't the case. So from this it seems as if white individuals saw black people as all the same.