You are frustrated with what is happening in our country. You believe that if people want change and to be safe they still need to comply.
What people like myself actually GO THROUGH is I have to look in the mirror before i leave my home and accept I may not come back solely due to the color of my skin. What someone like Ja'Cquez Williams has to GO THROUGH is if he gets pulled over it becomes a life or death scenario solely because of the color of his skin. What someone like Cameron Glenn has to GO THROUGH is being a large black man with tattoos means you're a target.
You asked a question of, "why sports?" Because it's the only place people like you and people in power seem to give a damn about them and they're able to get their voice across of "we matter too" because in every other aspect of life it doesn't feel like Black Lives Matter. I have 3 grandparents still on this earth and all three of them were alive before the Civil Rights Act was passed, 2 were in the military in different positions, and my grandmother was in public health. They'll be some of the first to tell you not shit has changed since then. My mother was in school a couple of years after schools in Atlanta gradually integrated. She'll tell you shit hasn't changed. She fears for my life every time i leave home, and I'm not someone who goes and breaks windows, steals, murders. I'm a 24 year old Wake Forest graduate with a double major, working in analytics, and do nothing else but write for a shitty blog and make terrible jokes on twitter. But she's scared for me, and I'm scared for me because the color of my skin makes me a target.
The players aren't promoting the organization, which does a lot of good but that is a discussion for not now, but they're promoting that Black Lives Matter. Because they haven't ever in this country and people are tired of being scared and they don't want their kids to grow up living in the same fear we have.