Unironically typing "repeat the mistakes of the past" with ignoring the history of how we got here displays an astoundingly myopic view of recent events. Both parties serve the same billionaires, which is why the Republicans do what they want and Dems are content with "decorum". In fact, our two-parties have displayed a remarkable overlap on the Venn Diagram:
• Republicans and Democrats both vote to increase ICE funding every year.
• Republicans and Democrats in Congress both practice insider trading.
• Republicans and Democrats presidents both bail out corporations that are "too big to fail" (i.e., Bush Jr., Obama).
• Republicans and Democrats both vote to give corporations subsides (i.e., corporate welfare).
• Republicans and Democrats both receive campaign finances from billionaires (i.e., legal bribery).
• Republican and Democrat presidents both order drone strike, resulting in mass civilian casualties.
• Republican and Democrat presidents have both bombed countries without Congressional approval (e.g., Trump, Biden).
• Republicans and Democrats both kept Guantanamo Bay open for decades. (A precursor for Trump's treatment of immigrants.)
• Republicans and Democrats both crack down on whistle blowers.
• Republicans and Democrats both maintain a surveillance state on its citizens.
• Republican and Democrat administrations both assassinated democratically elected leaders overseas.
• Republicans and Democrats both fund Israel's genocide of the Palestinian people.
Trump was not created ex nihilo. Presidential power has been growing for decades. Congress has been blatantly corrupt for decades. We have broken (and supported breaking) international laws for decades. Trump is a symptom of a larger problem: our government functions to serve profit rather than people. The problem will continue long after he is gone, unless the American people demand more.
I supported Bernie but the DNC are not legally required to be impartial. I voted for Obama, twice, but he turned out to be an establishment Democrat (despite the "Change" slogan).
Setting my own voting aside, imagine someone complaining about voting in Russia and you respond with: 1) Either run for office yourself or 2) Vote for who you like. That response completely misses the point. The electoral system is inherently flawed and aggressively suppresses attempts at reform that would actually represent the people.