First the KKK is the strong arm thugs of the Democratic Party.
Second, "Republic" is in name only, To sound like they are by the people.
In a Republic people can vote and change their governments. That is not allowed in Russia, China, Korea, etc.
The U.S. Democratic (& Republican) Government have a history that supports most Dictators because Dictators have stable governments that will toe the political line.
I think you should look into the Shaw of Iran, and the assassinations by the C.I.A. of Vietnam politicians, as well as South American Banana republics.