The difference between referring to "<discussion-relevant adjective> people"and referring to people as “<an adjective used as a noun>” is one of those things you can’t unhear once you start hearing it, too. It reduces people to a particular facet as though it’s the only thing that matters about them.
When somebody says something like “the thing about blacks is…” or “I work with a bipolar, he always…” it makes one clench: the thing about to be said is definitely going to be ignorant and possibly hurtful or bigoted. Just say “<adjective> people” or “people with <condition>” if you don’t want people to automatically assume that you view people only as what you perceive as their most important attribute.
Can anybody translate