2. Politics is often a touchy subject because often people having differing political views - sometimes radical views - however, this doesen't mean you should insult others views (as insane as they may be).
3. Politics is the process of making decisions for groups. Politics if often a word used when referring to governments. It is one of the main causes of death in the world.
News reporter: "Yes, well in recent weeks we have noticed a significant rise in interest rates...."
2. See liberal.
3. North Korea's government leaders (Kim II Sung, Kim Jong-il) used politics to set up what is often called a totalitarian dictatorship, they set up propanga in their media, (the newspapers don't have "real" news, just anti-US propaganda) there is only one TV channel, which is all about Norh Korea's "Dear Leader", Kim Jong-il.
The "quest for communism" has often resulted in millions of deaths, (see Soviet Union) when in practice, Communism is an extremely difficult system to establish and to maintain. Communist governments often become repressive dictatorships, and the whole point of Communism (to have a classless society, businesses not being able to exploit the average worker, "utopian society") becomes skewed by the government's view of becoming the strongest nation in the world (again, see North Korea).
The main reason for politics being bad is human nature - greed.