This report will identify and review general trends in radicalization through an inductive analysis of “hotspots” that epitomize them. Typically, specific events that qualify as hotspots are (1) premeditated, (2) potentially scalable acts of (3) extremist violence, within (4) a larger series or pattern of similar acts that are committed by radicalized individuals (5) clearly linked to or influenced by a radicalized group, network or organization. The analysis will identify, contextualize and then quantify distinct occurrences of physical or emotional violence that are characteristic of and central to the trends. The report’s main task is to scrutinize specific, pivotal moments – “hotspots” of radicalization – that represent a culmination of general radicalization trends and provide meaningful insights into their growth and expansion.