I don't think the article was a well written one. The following indicates that Rufus doesn't want to sell his house. It'd be nice if we had the entire story.
[Rufus] Matthews told The Associated Press that he would sell his home only to a white buyer. But he denied the house was for sale, saying a sale sign he had was for items in his yard. "The house has never been for sale," he said.
I looked at the article and I agree it's not clear what's going on.
Rufus may be less than honest about his version of events.
But did the sign say For Sale or House for Sale?
And what's on this tape that claims to verify discrimination?
My suspicions aren't about race but money. Why are a rich couple going door to door trying to buy property in a poor neighborhood?
They obviously have the money to hire an agent to buy property for them. What, they never heard of MLS?
This looks like the couple have an agenda.
An agenda that, while it appears to be based on equal rights to housing which they obviously don't need, will put $100,000 in they're pockets without the burden of buying a property in a poor white neighborhood at an inflated price.
(bear in mind the US housing market is booming).
If they were a poor black couple looking for their first home in an affordable neighborhood I might be more sympathetic.