Actually it stood for the promises the union government had made and weren't keeping to the southern states. Slavery was just a faze. The union had slaves as well before the whole "equality" movement happened, and even then women didn't have full rights quite yet. So the confederate flag stands for the fight to regain those promises and rights. So yeah, look into history before you go saying horrid stuff you know nothing about. Thank you.
I'm a Texan, and I also found this crack-up hilarious. But your right, I'm betting a yankee would only shake their head at this and respond something like: "Omg, that should so not be acceptable! This comic is stereotypical. And racist. And sexist. And Anti-gay! Come on homies! Let's all go protest at the White House! Until Obama makes a new amendment to the U.S. Constitution!"
Often not acknowledged by highschool history books, Abraham Lincoln's goal was not the abolishment of slavery. The abolishment of slavery was mostly to punish the south for rebelling. The abolishment itself was progressive, but the intentions were not so much so.