Confused about person-first language? Is it acceptable or not? Here's a brief history on PFL and how it went from etiquette to ableism: #pfl #ableism #acutallyautistic In 1983, at the dawn of the AIDS crisis, a brave group of activists stood up at a health conference and made a declaration which would later be known as The Denver Principles. It was a profound treatise on human rights in the medical profession which lives on to this day.