Colorado students walked out of an event billed as a vigil for Kendrick Castillo, an 18-year-old killed in a shooting at his school on Tuesday, when prominent speakers attempted to turn it into a rally for gun control. Sen. Michael Bennet (D-Colorado) and Rep. Jason Crow (D-Colorado) each took a turn calling for gun control at the Douglas County event before students streamed out in protest. Two students at STEM Highlands Ranch, a K-12 charter school focused on science, technology, engineering, and math, shot nine students, one fatally. The accused students, who were arrested, are an adult male and a...