In the late 19th century and early 20th century words like Idiot, Moron, and Imbecile we're clinical terms used by psychologists to describe mental illness. Over time these terms gained negative connotation by association and newer less offensive terms were needed. People became insane, and disturbed. Time continued to pass and these became offensive as well. Mentally Retarded became the PC term, but time stops for no pejorative so that's offensive too. And today you can see eternal march continue as young people on the internet love to call each other autistic.
So what I'm here asking you, you insufferable retard, is how that makes me a bad person?