The causes of the Civil War are very much like the turmoil we see today, and there is no way to remove race, liberalism and tradition from the equation. Just as Ferguson, Baltimore, McKinney and Charlotte are combined to reveal a broad rift between factions, so did actions prior to the War. For instance, Northern abolitionists, and slaves, burned almost the entire City of Dallas to the ground on July, 8th 1860 leaving many homeless and destitute...none of which were slave owners. This "protest" was an incentive for every Texan to be pissed, regardless of how they felt about slavery.
It really wasn't very complicated.
