Discrimination can provoke reactions that one otherwise would never believe one would be possible to deliver. Here are some ideas about this subject - here in a wider context as racism and disability stereotyping is similar but not same. Yet, reactions towards such stereotypes being acted out on yourself may be remarkably similar.
And really, it may be hard to suppress such reactions in any given situation. There may be some theory about the subject but obviously, daily life is an extremely practical subject altogether.