A person snatched stick of a blind man and threw it, another helped him cross the street. Both treated him differently because he was blind. Only one of them was asshole.
Maybe the blind guy did not want to be patronizingly helped with crossing the road. Maybe he would have asked for help if needed it and could have done without a sighted knight.
If these arguments sound perverse just swap out some other 'issue' and they will start sounding familiar.