A black and white issue or situation is one which involves issues which seem simple and therefore easy to make decisions about. But this isn't a simple black and white affair, Marianne She saw things in black and white. = clear-cut
In a black and white photograph or film, everything is shown in black, white, and grey. old black and white film footage The pictures were in black and white
of a situation that is sharply divided into mutually exclusive categories; "he rejected a black-and-white world"; "there are no black-and-white certainties"; "there were no gray areas, you were either for him or against him, he was all black-and-white