"This should not be hanging in my soon-to-be-kindergartener's classroom, " wrote Georgy Cohen, a MA mom, about a seemingly innocent nursery rhyme taped to the wall of her child's new school.
It begins "lockdown, lockdown, lock the door". Wait until it's safe inside.
Lockdown, lockdown, it's all done. The picture has been retweeted over 38,000 times and drawn thousands more comments. But later she tweeted a message saying that the school was "doing exactly what they need to be doing".
"Lockdown drills are necessary in this country because until stronger gun reform laws are enacted and the plague of gun violence eradicated, there must be systems in place to keep our schools and students safe", he said.
WBUR's All Things Considered host Lisa Mullins spoke with Somerville School Superintendent Mary Skipper.
It's not unusual for the walls of a kindergarten classroom to be plastered with colorful posters.
"When I was in kindergarten, we had fire drills", Cohen told the newspaper Thursday.More news: Cryptocurrencies tumble after S Korea hack
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Concerns have been raised that active shooter drills can leave children traumatized and fearful; balanced with the need to make sure children know what to do in an emergency, The Guardian reported.
Ms Cohen told U.S. newspaper The Boston Globe, the poster was "jarring" and said students didn't have to deal with those types of threats when she was in kindergarten. "It was different. We didn't have these same types of threats".
Georgy Cohen, a Boston creative director, shared the image on Twitter this morning.
A mom expressed mixed feelings about her daughter being prepared "if a bad guy comes to school".
There have been more than 20 school shootings this year alone.
Cohen and Somerville Public Schools declined to identify the school.
But Cohen, who drew attention to the poster, said it's also important not to normalize school shootings.