Discrimination and Oppression really pisses me off

Throughout history all we hear about is the great accomplishments of this fine country and how as a human race we have only further developed everything to make the life of Americans fully worth living. Sadly this life is only ever available to a very select grouping of those who fit a certain type cast. White, rich, and powerful by heredity seems to be the only way to guarantee yourself any rights and or benefits and it is honestly such bull. I am by nature a very passionate person but this only makes my blood boil to the point of blind rage. Why does a stupid predetermined mindset made hundreds of years ago end up ruining the lives of thousands even to this present day. We are given all these things that separate us and give us the opportunity to solidify ourselves as a prosperous and thriving nation, however we let these differences drive deep social wedges between us all. Whether it is ethnicity, race, or religion, the world is always looking for these categories to exploit and it is beyond upsetting.