Intentional selection bias and cherry picking is a real problem in media and other domains. Waiting to hear all the pieces you want to hear and then weaving them together to create the story you want in others' voices. It makes things seem more legitimate than they are because it is a set of real data, it just happens to be a heavily manipulated and carefully chosen set.

It sounds innocent at first because you're not creating false data directly, but you are falsifying the representation of the data which is just as bad if not worse.