Sayan, I think politics is not a bad things. The politicians are bad. But is whose fault? Obessievly, it is our fault, the fault of our system. When we chose a politicians for vote, we didn't want his background or past political life. We think that, our duty is to vote a person, nothing more this. But for this fault our society can more down levele. There is murder, rape etc.
So, I think if we want to a good society we have a better leader. And it is our duty to chose a leader and know all details about him/her.