re: #305 Kenneth
History of the terms en.wikipedia.org

The terms Left and Right have been used to refer to political affiliation since the early part of the French Revolutionary era. They originally referred to the seating arrangements in the various legislative bodies of France, specifically in the French Legislative Assembly of 1791, when the king was still the formal head of state, and the moderate royalist Feuillants sat on the right side of the chamber, while the radical Montagnards sat on the left.[1] This traditional seating arrangement continues to be observed by the Senate and National Assembly of the French Fifth Republic.

The leftists were the ones with the guillotine.