I think that removing the confederate statues is a good idea, but that it should be done legally and locally.
I would like to see all of them replaced with heroes who fought to bring an end to slavery, both in this country and abroad.
In the US, it might include William Lloyd Garrison, Frederick Douglas, Harriet Beecher Stowe or Thomas Paine.
Perhaps states can find a local hero in this cause.
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As for non-US, there is William Wilberforce who was so instrumental in ending slavery in the British Empire.  
In reading on the subject, I came across the Mansfield court decision in England in 1772, in which a man named Somerset was freed.  Mansfield (the judge) stated:
"The state of slavery is of such a nature, that it is incapable of now being introduced by Courts of Justice upon mere reasoning or inferences from any principles, natural or political"