To clarify, if A and I agree we belong to the same nation, but A thinks that isn’t the same national identity as slaveowners in the 1820s, I think A has the wrong definition of national identity. But I still think A and I belong to the same nation.
And if B thinks I belong to a different nation, but I think B and I belong to the same nation and I think the law backs me up, I still think B and I belong to the same nation.
~Max