Do you remember when you first heard about AIDS? No one really knew enough about it to understand the difference between HIV and AIDS or realize that you can't contract it through casual contact? There was little research, little education, little funding, and the thought of AIDS meant a death sentence. People made rude comments about the disease. Having the disease was the punch line to jokes. It was acceptable to associate AIDS to the homosexual community. In fact, it was even acceptable to assume one homosexual if they were diagnosed positive.
Do you recall the time in American history when cancer was something we didn't talk about when someone was diagnosed? Or even, perhaps, a time when the use of racial slurs was completely accepted in the workplace and schools?