A self-described misogynist who had been arrested several times for grabbing women on the Florida State University campus shot and killed two people at a Tallahassee, Florida, yoga studio; a 16-year-old in Matthews, North Carolina, shot and killed a classmate in response to bullying; and an 11-year-old boy in Litchfield Park, Arizona, fatally shot his grandmother after she had told him to clean his room, and then turned the gun on himself.