Europe also has had more experience with organised terrorism in the 20th century: Rote Armee Fraktion in Germany, CCC in Belgium, ETA in Basque country, IRA in

Europe also has had more experience with organised terrorism in the 20th century: Rote Armee Fraktion in Germany, CCC in Belgium, ETA in Basque country, IRA in Ireland, to name just a few. That might also partly explain why the reactions to terror attacks are more measured.