with a new sense of urgency, busk is trying to send the same message and he told reporters a few hours ago this campaign will look a lot different a few months from now. charlie, it sounded more like a wish than a prediction. >> rose: major, thank you so much. jeb bush and other candidates have had campaign appearance interrupted by activists for black lives matter, a movement that began after the fatal shooting of trayvon martin in florida in 2012. nancy cordes now on who they are and their goals. goals. >> reporter: supporters of the plaque lives matter movement don't discriminate, disrupting rallies for democrats and republicans alike. >> black lives matter! black lives matter! >> reporter: one activist grilled hillary clinton about her past support for anticrime laws that led to mass incarcerations of black men. >> so i justice want to know how you feel about your role in that violence and how you plan to reverse it. >> reporter: the term "black lives matter" became a touchstone after a series of killings of unarmed black men by police. >> hands up, don't shoot. >> reporter: now bl