That right was fully protected by the Union. In fact, parts of the Union owned other human beings till six months after the war was over.
So how do you feel about supporting a government that guaranteed the right to own other human beings?
As the London Spectator noted in 1862:
"The principle is not that a human being cannot justly own another, but that he cannot own him unless he is loyal to the United States"
What, you weren’t able to locate any Pravda quotes to defend your idiotic claims?