• by Amy Corr  @MediaPostOTL, December 5, 2016

Sandy Hook Promise created an absolute must-watch video called "Know the Signs," a 2:30 PSA that hopes to stop gun violence by educating kids and adults on warning signs that often appear before tragedy strikes.

Created by BBDO New York, the spot introduces "Evan," a high school teen who's bored, easily distracted and awaiting summer break. He writes on a library desk one day and gets a response. Soon, he's conversing with someone and itching to know who it is. Could it be the cute girl in the cafeteria or the girl seated next to him in class? He's about to find out, but the library is closed for the summer. He signs a girl's yearbook in the gym and her friend sees his handwriting and immediately knows it's the person she's been communicating with via library desk. Who says technology is supreme? This is old-school.

As the two get acquainted, a student brings a gun inside, and is about to shoot.

"While you were watching Evan, another student was showing signs of planning a shooting." The remainder of the video shows what viewers missed: a young man who was bullied, read gun magazines, watched videos of gun violence and who didn't interact well with others.

"Gun violence is preventable when you know the signs."