On Friday, March 22, a coordinated terrorist attack took place at the Crocus City Hall, a music venue located in Krasnogorsk, Russia, in western Moscow. The attack, which involved four gunmen performing a mass shooting as well as slashing attacks and incendiary devices that set the venue afire, took place just prior to a scheduled sold-out show by the Russian band Picnic. “The whole country, our whole people, mourns with you,” Russian President Vladimir Putin said in the wake of the attack, which has claimed 139 lives as of this writing. “The main thing now is to prevent those who were behind …