I went out of my way to trip the disabled man
Oh no. Why did you trip him? Was he hurt?
Yes, he suffered grieviously because of me.
You shouldn't trip people, especially if they are disabled. You could cause a bad injury, or even make their disability worse.
I wanted to teach him a lesson, to not get more special treatment than me and make things more accessible for me.
That wasn't a very nice thing to do. Tripping anyone is bad, but tripping someone who already has mobility issues is even worse. I don't think your behavior is going to make anything more accessible for you.