Race relations are more complex than passing laws and saying "look, we  elected/hired a black person." A lot of the time real change is seen at a  level that politicians and activists won't even tell you about.
So here's a story that you won't hear on the news or from a politico's mouth.
I  have a patient, an elderly white man. His wife died 2 years ago, and he  has no kids or local siblings. In 2010 he developed a relentlessly  progressive neurological disease, with increasing disability over time.
A  long time ago, when he was a teenager, his parents were prominent  members of the Grumpyville community. When a group of black  families wanted to build a community center, the majority of  Grumpyville whites fought like hell to keep them from doing so. Because,  after all, they were
 black people.
But Mr. Patient's parents were  different. They had this bizarre (for the time) view that people were  equal, and should be treated fairly. So they stood up against the  majority of the community, bought a parcel of land for the  community center, and then financed a large part of it out of their own  pockets.
So it got built. And became a successful (and still in  existence) black center in Grumpyville. Years went by. Mr. Patient's  parents grew old and died, and then Mr. Patient grew old and sick.
There's  nobody at the community center old enough to remember how it  got started. Although the center's humble origins are doubtless  memorialized somewhere on a wall or booklet, most of its members are my  age or younger now.
Mr. Patient is stubborn (like most guys) and  been reluctant to leave the house he and his wife have owned for 50  years. To him moving into a care home was out of the question. His  financial resources, though comfortable, didn't allow him to hire much  in the way of outside help. And he was too stubborn to call friends for  help. So he worsened, and became increasingly unable to care for his  home and self.
Usually these situations end in disaster. The  patient is found lying on the floor, dead or near it, after the postman  notices no one is getting the mail. But this one was different.
Last month,  through the community grapevine, one of the administrators of the black  community center heard about white Mr. Patient, and realized who his  parents were. He contacted him to offer help, and to my  surprise, Mr. Patient accepted.
So now Mr. Patient is able to continue living at  his house because volunteers from the community center, all born long  after the place was established, come to his home a few times a  week. They bring him meals and groceries, help with the upkeep of the  house, and are allowing him to stay there as long as possible.
That's what real measures of human change are.