People from Guyana would fall into the category as having grown up in a country with black racial component to it so that would predispose them to seeing themselves as black.That’s not even true Black Guyanese people go through it from the Indian majority.
But you didn’t know that because it’s not your concern just like police brutality in Georgetown South Carolina is not Guyanese Black people’s main concern.
As opposed to somebody from an all black country who didn't grow up with this component and might anchor their idea on who is in their tribe as something different.