the changing faces of politicans and the second amendment

Why is it that politicans, as a whole, while running for election, spout the same philosophy of believing in Democracy and the US Constitution? And, then while seated in the political chairs of the government, immediately forget the 2nd amendment. I believe I have the answer! They believe in the 2nd amendment for people who are not a threat to the politicans! Now, most criminals do not threaten the politicans, as the criminals can get what they want with money, but the average citizen can not do that. Therefore the non-citizens present a more significant threat to politicans, and it then becomes necessary for the politicans to control the weapons held in the hands of the non-criminals. Strange, isn't it?