In articles at Overcoming Bias and Less Wrong, the words "Blues" and "Greens" are often used to refer to two opposing political factions.
The terms come from the names of chariot racing teams, that differed in nothing but the team colors, but rivalry of whose fans sometimes reached the level of gang wars.1 By definition, politics also deals with matters that people physically fight over in the real world -- or at least, matters that are to be enforced by the government's monopoly on violence.
Politics commonly involves an adversarial process, where factions usually identify with political positions, and use arguments as soldiers to defend their side. When tempered by appropriate standards of evidence, rules of order and other safeguards, such a process may be the only way of introducing a modicum of deliberative truth seeking and other virtues of rationality into an inherently violent domain. However, the dichotomies presented by the opposing sides are often false dilemmas, which can be shown by presenting third options.
Less Wrong does not concern itself with political disputes, since they raise complex issues which go far beyond our definition of rationality. This can be readily seen by comparing the virtues of rationality with the political virtues identified by Bernard Crick.