ANNAPOLIS, Md. — When particularly juicy news would break, Capital Gazette editor Rick Hutzell would burst out of his office to share it with his associate editor, Rob Hiaasen. But one day, he wasn’t there.

Likely, Hutzell said, Hiaasen was at Acton’s Cove Waterfront Park, a tree-shaded gem of green space, bobbing boats and quiet that he was known to escape to for some thinking time.

On Friday, one year after Hiaasen and four co-workers were killed in a mass shooting in the Capital Gazette offices, a garden was dedicated to their memory in the park before dozens of the family and friends they loved, the coworkers who mourn their loss, the readers of the articles they wrote and some of the government officials they covered.

“In the future, when you have time, come here when this crowd is gone, when the cameras are gone, when we’re gone and our words are long forgotten,” Hutzell said. “Come here and think about what these five lives meant.”

The speakers addressed the crowd as a poster showed the slain co-workers: Hiaasen, who also wrote a column; Gerald Fischman, an editorial writer; John McNamara, a longtime sports and news writer and editor; Rebecca Smith, an advertising assistant; and Wendi Winters, a community features writer.

The dedication launched a day of remembrance of the deadliest attack on a newspaper in U.S. history. Jarrod Ramos, of Laurel, was arrested and is awaiting trial.

“It was the most brutal form of attempted censorship,” said David Dreier, chairman of Tribune Publishing Co., which owns Baltimore Sun Media, the parent company of the Capital Gazette. A moment of silence was observed at the time of the attack, 2:33 p.m. EDT, in news organizations under the Tribune Publishing umbrella.