The Black Lives Matter movement is also unpopular among whites. Only 35 percent hold a positive view of it, according to a recent Harvard-Harris poll, compared with 83 percent of blacks. The negative opinions could be attributed to the noisy, disruptive marches the group has held or to the occasional outbreaks of violence that have resulted. The killing of five Dallas police officers at a Black Lives Matter demonstration last year (by a gunman unconnected to the group) also alienated a lot of people.