You and jsaturn are missing the bigger points to this.

1) Washington, Jefferson, etc. were slave holders, and that is wrong. However, we are talking about honoring people that felt the need to rebel against the US government in order to uphold an institution that a majority of the nation at the time thought had run its course. Most of the western world at this point had already ended slavery in their colonies.

2) 90,000 Kentuckians fought for the Union, while 35,000 fought for the CSA, and yet, in that state, there are 72 Confederate monuments to only 2 Union ones. In other words, that state CHOSE to honor a side of which it was not on during the Civil War (Kentucky never left the Union) in the years that followed. Maryland is in the same boat.....a non-seceding slave state that has chosen to do more to honor the Confederacy, despite the fact that more Marylanders fought for the Union.

Perhaps you should be asking yourself why these states CHOSE to honor that side over the years.