Obviously it won't happen now, but it could be done, if the right people with the right plans came to power. Just think of Star Wars and how Palpatine made his way to power and turned it against the people. Hitler did the same also, he was voted in by the people. I was also thinking what if someone that high in power planned an all out assanination on our congress one night by hiring hit men for every senator and they would murder them in their own homes, who would lead our country if they were all assaninated? Just like that the president with no one to vote him out or watch over him could turn the country into a dictatorship. This is why I think the second Ammendment the right to bear arms is absolutely needed, incase something like this happens. If we get rid of it, we the people, would have no chance against a skilled military.