I mostly look at the political spectrum as a circle, rather than as a straight line. The use of a circle helps me to understand the similarities and differences of people on either side of the political center, and it demonstrates that the further along you go, in either direction, the more “detached” one becomes from most other people. Mostly, though, it demonstrates how very similar the “far right” and “far left” are to one another. As an example, Hitler (who everyone on the left claims to be an example of far right, was actually a “National Socialist”) and Stalin, a Marxist-Leninist up until someone invented a term tailored to Stalin’s behavior over 30 years, is said to be far left. Notice that both were fascist dictators, neither gave a damn about the notion of liberty, justice, or human rights, and both were the deliverers of abject misery to millions of their own people.
It would therefore seem to me that if you replace “Hitler” with any other radical idea, and replace Stalin with its exact opposite, then you arrive at a fair demonstration of where we are today. As an example, the argument of replacing the US Constitution with Sharia Law (or any other dogma) could appear on the far right, while Jesuits or Opus Dei could appear on the left … and, once again, we can observe that they are so close to one another as to be almost indistinguishable in their effect upon mainstream society.
There are times when labels are just that: convenient labels. There are also times when labels do mean something. We should be smart enough to know the difference. We should become concerned, and should resist with all our ability, whenever that "something" becomes a threat to our American way of life and the future of our children.