1. Murder and Extremism in the United States in 2018;Anti-Defamation League (ADL),2019
2. Counter-Terrorism Operations against Right-Wing Extremism in Western Europe Increase 191 % in 24 Months;C Hawkins;UK as Four Plots Foiled ' , BBC,2018
3. Far-Right Groups Could Exploit Brexit Tensions -Police;BBC News,2019