The American Whig party is defunct .
It was never outlawed or "abolished" on purpose, it just failed to hold together and its membership abandoned it , it lost its central purpose and was killed by its uselessness.
It would be very nice if the NAACP would disband because no one felt need for it , but this isn't happening right now.
Perhaps it can , wouldn't that be something to celebrate if it were to become unneeded?
Perhaps it could disband with a party.
The KKK is not outright outlawed , but the RICO statute can be used against it , so it is almost outlawed. It isn't gone , but it isn't very effective and is a shadow of its former self. More because it is not cool to join anymore than any other reason.