Rubuta ci gaba don wannan sakin layi - Hare-haren sun kasance mafi muni a Norway tun bayan Yaƙin Duniya na II, kuma wani binciken ya gano cewa ɗaya cikin huɗu na Norwegians sun san "wani wanda hare-haren ya shafa". Har ila yau, shi ne karo na biyar mafi yawan hare-haren ta'addanci na duniya a Yammacin Turai bayan fashewar Bologna a 1980, da Nice
a shekarar 2016, hare-haren da aka kai a birnin Paris a watan Nuwambar shekarar 2015, da kuma hare-haren bam da aka kai a jirgin kasa a birnin Madrid a shekara ta 2004.