One year ago, on April 12, 2018, the lives of so many were shattered with the news that Yarmouth Police officer Sgt. Sean Gannon was murdered in the line of duty while attempting to serve a search warrant to a criminal.

Sean's K-9 partner, Nero, was also shot and injured. Today, Nero is in retirement.

A photo of Sean sits on a table as you enter the Yarmouth Police Department as a reminder of his sacrifice, but it's also a lasting commemorative to be kind and caring to others. That's the message his widow, Dara, and his family wants us to take away from this senseless death. If you want to be like Sean, show someone you care through an act of kindness.

There's a four-minute video that's a beautiful tribute to Sean on the Yarmouth Police Department's Facebook page. Also posted is this: "Just be like Sean and the world will be a better place."

The idea of changing the world can be overwhelming. You're only one person. What can one person really do?

If everyone felt like that, nothing would change. But, if everybody did just one thing to make the world a better place today, billions of acts of kindness and respect would take place—and wouldn't that alone change the face of this world?

Phil Paleologos is the host of The Phil Paleologos Show on 1420 WBSM New Bedford. He can be heard weekdays from 6 a.m. to 10 a.m. Contact him at phil@wbsm.com and follow him on Twitter @PhilPaleologos. The opinions expressed in this commentary are solely those of the author.