Father Martin McVeigh was giving a talk to 26 parents and one 8-year-old kid when computer disaster struck. He connected his USB drive into a PC to start his Powerpoint presentation and, instead of the word of God, a hardcore gay porn slideshow started—thanks to Windows’ autoplay. Some parents—who were there to hear McVeigh talk about First Communion—were angry. Others were in shock. Just like McVeigh. He was so embarrassed that, according...