Still, conscious actions have to be taken, politically, financially, and economically, to make such a thing happen. There has to be a plan in order to take over. Checks and balances have to be systematically removed (which unfortunately they are). Such an agenda takes intelligence and planning. They know, for example, that by building the NAFTA super highway, or by leaving our borders open, that theyr eroding our national sovereignty. Further I sincerely believe the Bush adm. had a hand in 9/11, 1. they've continuously blocked investigations, showing they had something to hide, 2. it did everything necessary to get a police state agenda rolling.
Tyrants can't take over without a strategy or a game plan, the international bankers control the money around the world, hince they control the world. Every dollar printed costs the government that dollar plus interests, all monetary systems operate in this fashion, meaning theyr all doomed to collapse. Poverty creates the conditions for tyrants to rise to power.
Evolution might play a role in the sphere of dominance, but they are consciously aware of what theyr doing. Theyr just too greedy and selfish to care.