Mom breaks down after seeing her 3-year-old practice lockdown drill

TRAVERSE CITY, Mich. -- Amid the gun -control debate in Washington, a photo on Facebook is catching many people's attention.

A mother shared a picture of her daughter standing on top of a toilet, which appears innocent at first glance.

But Stacey Feeley says her daughter was practicing a lockdown drill from her preschool on what to do in the event of an active shooter in the building.

"I said, 'What are you doing, why are you standing on the toilet,'" Feeley told ABC News. When her daughter replied,"'Lockdown, you have to be really quiet,'" Feeley said, "It just broke me down."

Feeley said she doesn't think her daughter understands exactly what she is practicing.

"In the schools they are very good about telling them that this is a drill for if someone that is not supposed to be in the building is in there," she said. "They do not even bring up guns whatsoever, but the older kids understand."

As a mother, Feeley said she felt the need to vent. She posted the photo to her Facebook account, expressing her outrage in a post that has since garnered more than 7,000 likes and more than 11,000 shares.

Feeley told ABC News she had no idea the impact that her post would have on so many people, but she is glad it did.

"I hope it wakes people up," she said.

Watch Feeley's interview with CNN's Rosemary Church above.