Moses was raised as an Egyptian but nothing in the Bible indicates that they didn't know he was Hebrew. Pharaoh's daughter adopted him and she knew very well who he was.
Many theories say that the farther south you go in Egypt, the more black influence there was. Theories.

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.