There is nothing more that I can add to this graphic that would help you better understand the political order that has sadly succeeded for decades in the USA and Europe. This is why it has made very little difference whether in the US you vote Republican or Democrat or in Britain whether you support the Conservatives or Labour.
Ask yourself why vote when you are voting for the same people to continue doing the same harm to you, your family and friends and your country? Thankfully Trump is a threat to this established order as is Brexit in Britain. Perhaps there is hope now.
This Is Why Nothing Changed - But Trump Changes Everything