For people who actually respect the constitution, trying to remove an entire state full of people from it's protection is the blackest treason. Why else would a bunch of neo-confederates try to break away? So they can finally get rid of those pesky parts that grant equal rights and protection to people they really want to **** over and keep down.
Which is why 'secession' is un-Constitutional, it seeks to take an American's citizenship from him against his will; as is the case with a citizen's fundamental rights, whether or not one retains his citizenship is not subject to acts of state government, popular vote, or majority rule.