You write: "We need white people to realize this truth regardless of its difficulty." 
Well, we need black people to realize the truth regardless of its difficulty. Much as you want to deny it, there are people of color who are "extremists". Acknowledge that. Next, the football players are acting "unpatriotic" by disrespecting our flag and national anthem. They may not feel they're unpatriotic, but they are disrespecting a symbol of our country that most of us are proud of. Most of us consider that unpatriotic. Only they know what is truly in their hearts. Next, blacks commit a large amount of violent crime and murders, over half of all murders, yet they account for only 25% of police shootings. When calculated against crime, whites are shot at a disproportionately higher percentage. I could give you all sorts of statistics, figures, and studies to support that but there isn't enough room in this post. But black people need to realize that truth regardless of its difficulty.