Four men were arrested this week on suspicion of gang-raping a gay woman in the San Francisco area last month. The group consisted of two men and two male teens, including Josue Gonzalez, pictured. [AP]
"Why this stuff happens" is a combination of a bad education system, poverty, and the continuing acceptance in national discourse of people who openly and unapologetically hate gays, with people who object to that language being told they need to "tolerate" it, by which is meant, "STFU LGBT people. We'll get to you eventually."
(Like, you know, if I wasn't clear enough, Rick Warren. OH GOD I CAN'T HELP MYSELF.)