1) The reason prejudice is there is we voted for it. We get to elect legistlators. The obstacles to reform are us. Want reform? Vote for people who will change the law. In one election we can change state legistlators. In at most two we can change State Senate and governors. The same goes for Federal. In at most 3 elections we can have sympathetic House and Senate and President. We already have the President. Vote and you will see the results. I promise.
2) The State and Federal government. We vote for them. Speed it up by voting. One election will change the lower house. It also shows the rest how voters think. That will do
3) Don't worry about it just vote. The rest will fall in place.