These two fringe elements of the right and left respectively, are symptoms of widespread dissatisfaction among the common people.
Both groups represent the disenfranchised (or at least those who see themselves as disenfranchised) and loudly present vague laundry lists of complaints about how "their" country has been co-opted by the menacing Other Side. Neither group can seem to put together a coherent set of beliefs on which its members can agree - just that something is wrong, and THIS simplistic solution might fix it, not the other guys.
Looking at this phenomenon, which is not new to American history, I have to see the emergence of vocal fringe political movements that are gaining strength as a warning sign that our nation is seriously ill.
Without some sort of positive change, we run the risk of becoming irrelevant on the world stage, or worse, actually splitting into two distinct countries - both irrelevant - after a long and bloody second civil war.
It's time for cooler heads to prevail, and for Americans to stop acting like children. We have to understand the word "compromise" is not an obscenity, but the very heart of our political philosophy.