According to Linn’s Stamp News, the US Postal Service has now been forced to destroy the entire run of stamps based on Michelle Obama’s “Let’s Move” initiative.

That’s because three of the stamps showed children doing unsafe activities: one showed a child jumping cannonball-style into water; a second showed a child skateboarding without kneepads; a third showed a child doing a headstand without a helmet.

The President’s Council on Fitness, Sports & Nutrition had not approved the stamps, but were only made aware of the problem after Nagisa Manabe, USPS marketing chief, asked Michelle Obama to take part in the ceremony inaugurating the initiative.