As it's already been mentioned, I didn't know Shawn but after hearing everyone's feedback on how much of a staple he was to his community, you could even say to his country, this is definitely horrible news.
For those looking for closure, it'll come but not overnight. When something as stupid as a shooting happens, for no reason at that, it's often hard to find the culprits. My blessings go out to his family and friends. Hope you're all recovering from this disaster.