Why has this picture upset so many people?

New Delhi: A post by an American woman of her little daughter standing on a toilet seat has caught upon a lot of serious attention. The message behind the photo is about the 3-year-old girl practicing lockdown drill taught at preschool.   The daughter revealed she was practicing what she'd been taught to do if ever she got stuck in a bathroom during an attack. Stacey Wehrman Feeley says this made her realise all her daughter's innocence was gone.     'Politicians - take a look. This is your child, your children, your grandchildren, your great grand children and future generations to come,' she wrote. ALSO READ: Bikaner land case: ED issues notice to firm linked to Vadra   The photo and Stacey's plea for gun control receive more than 27,000 likes and is rising.   So were the number of comments below the post supporting Stacey’s thoughts.