This is a term and concept that most people aren't very aware of. So what is it? It's oppression towards people who are "less able" to do something. This means blind people (less able to see), people without a leg (less able to walk), or people with mental disorders (less able to think normally). The most common form of ableism is the derogatory use of the word "retarded", thus reinforces the negative view of people with mental disorders. Other forms is not accommodating to people in wheelchairs or expecting everyone to be able to read things, not including any braille alternatives. Ableism is a term and concept that needs to see the light of day far more. If possible, please spread the concept as wide as you can.