Why do people assume that the Confederates were more pro-slavery than the north? The Union didn't even end slavery in the northern states until after the Civil War - it's not as if the Union had made slavery illegally and the Confederate states refused to play ball.
The Emancipation Proclamation ended slavery in the Confederate states that the Union didn't even have control over but it didn't end slavery for the Union States.
The Civil War was NOT fought to end slavery - but it's widely accepted as fact. The Confederate President, Jefferson Davis even adopted a black son.
That being said - the taking down of statues just shows a complete misunderstanding of history. Confederacy does not equal pro-slavery just as much as The Union didn't equate to pro-abolitionism.
Slavery was more prominent in the South because agriculture is more profitable in the southern climate but even then, many of the slave owners were originally from the north - hence one of the reasons why...