Discrimination means treating things differently because they're different. You seem to be assuming that all discrimination is bad; but the "bad discrimination" is discriminating based on irrelevant differences.

> Stereotypes reinforce themselves through the ways we treat people.

Whatever; I don't understand the sentence. Perhaps I should have studied sociology! But a "stereotype" is like a cardboard cutout; it's a super-simplified (ands therefore false) representation of a difference. I don't know what stereotypes have to do with discrimination, unless somehow we're suddenly talking about racial discrimination, or gender discrimination, or some other unjustified discrimination.