In short, the War of Nothern Aggression, genocide of the Native Americans, the imperialism into Central America in the 1800s, failure to resolve slavery by non-violent means, the creation of the federal reserve (a private bank that lends the people's wealth back to them at interest), imposition of the income tax in the 1920s, confiscation of the people's gold money from circulation, post ww2 military industrial complex imperialism, the creation of institutions not expressly defined in the Constitution (CIA, FBI, NEA, FDA, NIA, FCC, IRS, etc), leaving the gold standard in 1971 and defaulting on our international monetary obligations, all our military actions without Congressional Declarations of War, Homeland security and post 911 National security measures, Obama's signing the NDAA legislation.
If you think these came about because of a 'system of voting' or a 'political party' you should kill yourself before you can reproduce to help humanity, in your small way, progress forward.