"[I]t should be noted that we report no killings in 2018 related to left-wing extremism, a category in which we include traditional left-wing extremism, left-wing single-issue movements, anarchists and black nationalists. In a sense, this is not unusual, in that left-wing extremists have not been particularly violent over the past 20 years, and most of the violence that has emerged from that quarter has been directed at property rather than people. ADL's data shows just 15 murders linked to left-wing extremism over the past 20 years, with 13 of the 15 fatalities occurring in 2016 and 2017, all linked to black nationalists."