It's extremism to prefer the system that our founding fathers created and that we lived comfortably with for the first 125 years or so of our nation's existence?
I bet you don't think it's extremism to change the meaning of the 13th amendment to include the concept of gay marriage as a constitutional right. I doubt that you'd characterize it as extremism to get rid of the electoral college. I bet you think it's extreme to use the amendment process to change the constitution but it's not extreme to get a court to do it.
I'm in favor of repeal of the 17th amendment. The states should be more meaningful entities in our federal system.
"Well, it is one thing for Bill Clinton to say, I feel your pain. It is another thing for Barack Obama to say I feel your pain that I have caused." - George Will