Last Friday, 400 seniors at Norwin Senior High School in Irwin, Pa., thought they were attending a routine presentation on the importance of donating blood, offered by the community’s Central Blood Bank. Instead, when Assistant Principal Tim Kotch cued up the PowerPoint slides provided by an employee of Central Blood Bank, the giant screen was filled with gay porn. It gives new meaning to the term “flash drive,” doesn’t it? Reports say it took somewhere between 15 and 30 seconds for the images to register in the minds of the large audience, and then for the assistant principal to pull...