Since this is a "Republican Christian nation", why not erect a statue of Satan w/Adam and Eve to remind us of our history as sinful humans?

Too late, it has been done.

Just look up either statues of Baphomet or of Molech. Even the Pope has joined in:

One has NOTHING to do with the other and humans have always been sinful.  Republicans are trying to fix that - end the corruption, offer Americans a better way of life, fix the infastructure of the country, create jobs, bust the sex traffickers, etc.  Why would anyone in his right mind erect a statue of Satan?  Only a evil person and death worshiper would do a stupid thing like that.

You want to erect a statue of satan? I’m pretty sure there was a commandment about that...

If you set foot in a church once in your life  or picked up a Bible, you might see some depictions of that very scene.

People might get confused and think it was a statue of Obama

I don’t understand why Liberals freak out so bad over racism almost as if it is some sort of original sin equivalent to or worse than what Adam and Eve did. 

Racism is normal and natural and it is cruel to force unwilling groups of people to live with each other.