We are not a democracy, we are a republic. Learn the difference.
"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness." US Declaration of Independence
These secession attempts are people that feel that our current governments are destructive towards their rights. When that happens, you can try to alter it or abolish it. That is what is happening here. Since the Declaration of Independence is the root of our nation, the US should recognize that the course of action taken by it should be a valid course of action for those within its jurisdiction. Try reading it for understanding. Here is a link:
http://www.archives.gov/exhibits/charters/declaration_transcript.html It is basically a giant list of gripes we had with England's rule. How many of those same gripes apply today to our current governments, both at state and federal levels? Several.