The South were absolutely not the good guys.>bring in blacks into the country>ignore democracy when it doesn't go your way (and try to cheat using the 3/5ths compromise to inflate your votes)>leave the Union over an issue the entire rest of the civilized world has already solved>try to get states rights to supercede federal authority when that's the whole reason the U.S dropped the articles of confederation>kill Lincoln before he could deport the blacks you brought in
Whether you are a Libertarian, Nazi, or Marxist, you should never think the Southerners were in the right. They could've turned into a second Haiti if the slave population continued to grow and they won. Obviously only talking about the higher levels of politics, your average grunt just wanted to prevent Northern retaliation after the South took the first Northern fort.
The CIS did nothing wrong though, unlike the American South they had a genuine reason to secede.