Looks like Cap'n Moral Equivalence has entered the room.
You see no difference between (1) erecting a statue for a man who's claim to fame-and the reason he is being honored--was fighting specifically to preserve the institution of slavery, and (2) erecting a statue to a person who is famous for doing X, but who also happened to own slaves?
For the record, I'm not in favor of removing statues of Jefferson and Washington, because we're not honoring them for their views on slavery/civil rights, but as founders of the US.
The idea that there's some slippery slope if you remove confederate monuments is silly and intellectually dishonest.