A Boston police officer stopped a man just for doing something right. 

According to the Boston PD, the officer couldn't help but praise a driver after spotting a car with a "PEACE" license plate.

The department posted photos of the license plate and driver on its Facebook page, describing what happened. 

 

LICENSE PLATE OF THE DAY: One of our officers in Brighton recently stopped a car bearing the license plate pictured...

Posted by Boston Police Department (Official) on Thursday, October 1, 2015

 

The officer said when the man pulled out in front of him, he happened to be thinking about Martin Richard, the eight-year-old boy who died in the 2013 Boston Marathon bombings. 

A statue of Richard had just been unveiled at a local college. After the terror attack, a photo of Richard was widely circulated, showing him with a sign that read: "No more hurting people. Peace"

“I was so impressed by the plate, I had to tell the operator. So, I pulled up next to the car and, before the operator could say anything, I said to him, ‘Listen, you’re not in trouble, I just wanted to tell you that I love your license plate,'" the officer explained. 

Asked why he chose the plate, the driver, described as a "delightful man in his early sixties," smiled and answered, “Why not?”

The department directed readers to learn more about the Martin Richard Foundation, devoted to honoring the little boy's message through "education, athletics, and community."