They create two sides to distract the masses. They delude the masses in thinking the other 50 % of the population is the cause of their problems. Even when it switches back between conservative to liberal nothing major happens and people still fall for this meme every time. Everyone is too stupid to figure out the people playing them, instead they would rather blame the first thing they can blame and not move on. Modern politics is about brainwashing as many people as you can. If these people who constantly undermine our goverments were to be eradicated then naturally when parasites are removed from a host body the host body recovers.