After her 7th-grade son fell victim to a violent slap challenge at school that left him with a big red handprint and bruising on his back, a concerned Texas mother is warning parents of this dangerous new trend.
Security companies spent years pushing schools to buy more products — from "ballistic attack-resistant" doors to smoke cannons that spew haze from ceilings to confuse a shooter. But sales were slow, and the industry's campaign to free up taxpayer money for upgrades had stalled.