Twelfth of July, Donegall Street, Belfast, 2013. Dominic Bryan, via Flickr

A few years ago, I found myself in a very Protestant part of Belfast trying to convince neighborhood kids that they should be nice to Catholics. I was working for anonprofit, drivingall over Northern Irelandto direct sports programs that bussed groups of children back and forth between Protestant and Catholic enclaves. Americans would probably describe the work we did as “peace-building,” but locals in Belfast called i...