"
Then again, I might be wrong about the civil war bit."
Given that, if you live in the US, it's a "you bet your life" proposition, you'd best be very careful before possibly sparking one, no matter how low a probability you think it is from people you've shown yourself to know nothing about. And you're definitely limited in your imagination, we've watched recent history and know "real movements" as such aren't an option (at least in the beginning). Fortunately they're not needed.
You would also do well to remember a couple of quotes misattributed to Imperial Japanese Navy Admiral Yamamoto Isoroku, the architect of their attack on Pearl Harbor:
"I fear all we have done is to awaken a sleeping giant and fill him with a terrible resolve."
"You cannot invade the mainland United States. There would be a rifle behind every blade of grass."