Now, if they were to just trash the system by suspending elections, declaring martial law, shooting or jailing the opposition, confiscating civilian weapons, or otherwise doing something like a rehash of the post-WWI Russia or the '30's Germany, then I'd change my mind in a hurry, as I suspect a whole lot of others would as well.
When the time for revolution comes, it'll be obvious to the reasonable patriotic person.
This is pretty much how I feel on this topic. The Constitution is there to protect the people and limit the government. Those that have taken oaths to defend and protect it are likely to be prosecuted if they blatantly choose not to. The legal and election system are a far more preferable route to take to eject those that no longer think the Constitution is a viable document.