I'm going to walk down a flight of stairs to avoid a disabled homeless man
Is it a man or a woman?
Obviously a man, I want to avoid them.
How someone looks is not a great reason to avoid them. Try to understand that people are not exactly what they may appear to be.
Why can't I do what I want and stay away from these nasty people?
Just try to have more perspective when it comes to people in general. You just never know what someone may have gone through to get to where they are today.