I disagree with likening these folks to slaves. Slaves didn't have any choice, while today's welfare cases are largely there by choice.
Slaves were respectable people in terrible circumstances. They largely worked very hard for what little they had in life. Most were proud human beings and once freed, they found jobs and worked very hard to make a life for themselves and for future generations. They'd be sickened to see what has become of their people.
Today, you have multiple generations of families that don't (and won't) work. They rely on a gub'mint home, gub'mint food stamps, a monthly gub'mint check, gub'mint health care and all manner of things they didn't earn and don't appreciate.