Are not the representatives we get to choose from filtered before we can select them? Aren't the representatives beholden to those who can get them the money to

Are not the representatives we get to choose from filtered before we can select them? Aren't the representatives beholden to those who can get them the money to run before we even get to hear that they are running? Aren't the (only two) political parties in consensus on issues in the high finance, insider trading, and foreign investment that bring their kin high rewards and imperialist neo-colonial empire building that makes this growth possible? Yes we can bother these people about allowing gay people to marry (or not, or whatever) but when can we ask them not to cause revolutions around the world (like now in Venezuela) and then intervene with bombs and 'bring Capitalistic freedom' by fixing American private investment in their resources? You can make noise about some things, but they either will not last (re Syria) or they will not listen. Other strategic objectives, international agreements and private investment come first. How are you going to immediately and suddenly alter 300 million people to spend multiple hours a week to sift through the reams of propaganda and PR (whose voices rise above political realities) to come to independent and critical political and social analysis? That's a huge lifestyle change - we can't even get 300 million people to turn off the lights when they exit rooms to save electricity. If people on the whole want to enjoy hobbies, entertainment, family and work instead of being full time politicians and investigative reporters can we snub them for that? We need a system that can work with people who are busy living their (plebeian) lives but is still able to represent their interests. Someone might say that this isn't possible - but then are they not saying that representative democracy is not possible?