Educating people about the history of what really happened in this "melting pot" to stop this white supremist nation vib

I have been in numerous debates with my white privlaged family about the Mike Brown case as well as the other TEENAGERS or young children who are shot because they are "black/seen as threatening!" It is so sad to me that even they don't understand because we are a very liberal family. Please help the media to show more of the other side. It is so sad what is happening. I feel for these families.