It's important to remember why many of the monuments are there in the first place. Around the turn of the 20th century, the Southern Democrats (
Redeemers) were threatened by the Populist Party, the Republican Party, and other parties which were relatively progressive on workers' rights (Southern workers had far less success than Northern workers in gaining labor rights) and even civil rights were threatening their dominance in many states. Around this time, a bunch of Civil War monuments were built (the majority were built between 1895 and 1915) which was to remind the common white man about their Southern heritage in order to maintain control over the South. Remember, even if the white man is poor, he knows that at least he isn't a black man since he can take pride in that Southern heritage--that's how the South worked even while the white man suffered immensely in the horrifying conditions of sharecropping or the cotton mills that were the main part of the Southern economy after the Civil War.
Seriously, go read up on the "New South" concept and how the post-Civil War South relied on a distorted historiography of the Civil War to maintain control over both white man and black man alike and build itself. This isn't some political bullshit, this is simple historical truth according to the very words of the people involved. Monuments were just one part of the New South system.
Now, I don't think these statues should be smashed by Antifa vandals or shit. A lot are in rural towns and are just memorials to Civil War dead--which we should remember the average Confederate soldier was a poor man fighting a rich man's war (that's why poor people in Appalachia and elsewhere revolted against the Confederacy). If some city doesn't want a Confederacy memorial, then they should democratically remove the memorial and should probably replace it with a more honest Civil War memorial.
The best way of dealing with these memorials is to put them in their proper historical context (which is both the Civil War they celebrate
and the New South which commissioned them) and having better history education. Sadly, history education is far too politicized in this country and the South has a particularly poor education system. If people knew their history better (everything I quoted above is based on what I learned in college, and it wasn't taught by some dumb SJW soyboy commie professor either, the guy had a Southern accent and was an ex-Marine) maybe they'd have more understanding of why things are.