pro -- propolice. i'm ali velshi, this is "third rail". >>> chicago, a city on edge, rocked by protests over the police shooting of teenager la quarn mcdonald 15 months ago, now officer jason van dyk is facing murder charges and the police superintendent gary mccarthy has been fired. moves credited to "black lives matter." what started as a hashtag is a movement. from the streets of missouri, baltimore, new york and heard. >> there is a specific problem that is happening in the african-american community that is not happening in other communities. and that is a legitimate issue that we have to address. >> joining me now is patrice, founding the black lives matter movement, after the acquittal in 2013. and was one who coined the hashtag "black lives matter." good to see you. thank you for being with us. i want to start by asking you. because that slogan is popular. why does "black lives matter" need to be exclusive? the goal, obviously, is to value lives that you didn't think were valued. so why not bro

pro -- propolice. i'm ali velshi, this is "third rail". >>> chicago, a city on edge, rocked by protests over the police shooting of teenager la quarn mcdonald 15 months ago, now officer jason van dyk is facing murder charges and the police superintendent gary mccarthy has been fired. moves credited to "black lives matter."

pro -- propolice. i'm ali velshi, this is "third rail". >>> chicago, a city on edge, rocked

pro -- propolice. i'm ali velshi, this is "third rail". >>> chicago, a city on edge, rocked by protests over the police shooting of teenager la quarn mcdonald 15 months ago, now officer jason van dyk is facing murder charges and the police superintendent gary mccarthy has been fired. moves credited to "black lives matter." what started as a hashtag is a movement. from the streets of missouri, baor

pro -- propolice. i'm ali velshi, this is "third rail". >>> chicago, a city on edge, rocked by protests over the police shooting of teenager la quarn mcdonald 15 months ago, now officer jason van dyk is facing murder charges and the police superintendent gary mccarthy has been fired.