Originally Posted by Neapolitan

Everytime there is a terroristic islamist attack I look up the date to see if there is any historical significance and there is more often then not a link to the past. The terrorists are thinking "yeah, you won on that date in the past but in the future you will always be afraid of that date."
May 22nd:

https://en.m.wikipedia.org/wiki/May_22
https://en.m.wikipedia.org/wiki/Anglo-Iraqi_War