Abuse of the physically disabled

I thought I had it bad because, since my first psychiatric hospitalization in 1992, people have abused me and then laughed at me and about me while telling everyone that what I said happened didn't happen.  

Being homeless for years at a time since 2011, I have observed bullying, emotional and psychological abuse of homeless people who have canes, walkers and wheelchairs.  The abuse happens in the homeless shelters, and is a continuation of the discrimination and exploitation perpetuated by landlords.  

Although some homeless people abuse the disabled homeless, the worst abuse is perpetuated by the staff of homeless shelters.  The qualifying requirements to be hired to work at homeless shelters are so low that blatant abuse of disabled guests occurs for weeks, months and years without intervention.  

The pattern is the same; one or a few of the most vicious and dishonest staff people persecute a disabled homeless person.  Other staff either say nothing about the abuse, aren't aware of it, or aren't discerning enough to recognize that it's abuse.  The responses of the abused person are attributed to dishonesty or insanity.  The abused person who doesn't submit docilely to mistreatment is refused access to the shelter, even in the winter.