The "feet" were Communism (complete public ownership) and Fascism (ownership by the State as represented by particular individuals).  The broad curve had Socialism (widespread public ownership) on the left, Capitalism (widespread private ownership) on the right.  The reason for the ankh shape was to show how the feet sort-of came together; they might even be confused for one another because of their similarities in style.

Overlayed on this was another "ankh."  The "feet" were totalitarian government on the left (no personal choice) and authoritarian government on the right (very, very "personal" control).  On the curve, democracy was on the left and representative government on the right.

Overlayed on this was another "ankh."  Communists were the left foot, Reactionaries the right.  The curve had the liberals on the left and the conservatives on the right.

Overlay on this was the ankh with the Peace and Freedom Party as the left foot and the American Conservative Party on the right.  The Democrats were the left curve and the Republicans were the right.

Actually, the teachers never did the overlay.  I did as a seventeen-year-old Senior.  I showed it to my "Civics" teacher with commentary that I noticed that  there was a correlation between Socialism-democracy-liberals-Democratic Party and Capitalism-representative government-conservatives-Republican Party.  This was at a height in Cold War competition; the United States had just "lost" Vietnam.  Socialism was suspect because it was so close to Communism (forget about Sweden, kids), democracy was admirable but unworkable in a country as large as ours, liberals had been trounced in the 1972 election and Democrats, well, how many of you have parents in the Democratic Party here in nice, safe, prosperous, college-in-your-future suburbia?

I showed it to my teacher.  He said he'd never seen anything like it.  He assured me that my overlay was somehow not a correct correspondence (though very, very interesting); he just couldn't say exactly why.

This moment has been an epiphany for me.  I think I now understand why I dropped drama as a college/career pursuit and became a history major.  I think I was trying to find the reason why I was "wrong" or the reason why I knew more than my teacher, who was one of the smartest people I've ever known.