All through history people have opposed these injustices. Unfortunately those with the money and power could control people with the arms of the state (the police and army) while encouraging whites at the bottom of the social classes to feel superior because of white supremacy and not find common cause with people of color.
Trump for example lost the popular vote by 3 million. He was NOT the choice of the American people. However the Founding Fathers as an elite concerned about the "power of the mob" in a democracy included the Electoral College in the Constitution, enabling the elites to have another way to get their candidate into the Presidency. Trump's base is only 25% of the voting population, if more people voted (40-60% of Americans do not vote in elections) that proportion would shrink. Trump and the Republicans are doing everything they can to suppress voter turnout especially for younger voters. The Millennial generation is the most diverse in US history (roughly ages 38-23) and also the largest, while those ages 22 and younger are even more diverse making white Americans one group among many in younger generations, rather than the majority. It's no coincidence that the crowds of protesters are so young.
Trump is the expression of an Oligarchy that is trying to keep racial groups in their place and is very much a reflection of older generations. Those same Boomers however brought us civil and women's rights. If as a result of this uprising younger people finally come out to vote in large numbers they could sweep out of power the old racist guard such as Mitch McConnell, leader of the Senate.
America cannot exist as the richest economy in the world with such huge inequality, especially across the generations and races. The American Dream has always been a mirage for black people but now huge numbers of white people are also struggling economically. If they continue to find common cause the US could become a social-democracy which is what most voters are asking for. There has been lots of public discussion about universal health care, forgiveness of student loans, federal minimum wage and universal guaranteed income. All of which were radical before the economic crash of 2008.