CALABASAS (CBSLA.com) — More than 100 cyclists made their way from Calabasas to Los Angeles Wednesday evening to pay tribute to Milt Olin Jr., a prominent entertainment lawyer and former Napster executive who was killed while riding his bicycle in December.

SKY9 was overhead as the 30-mile bike ride vigil started at 4 p.m., near the accident site, and wound through the Southland, picking up more participants along the way.

The group is calling on District Attorney Jackie Lacey to file charges in Olin’s death. The 65-year-old was riding in the 22000 block of Mulholland Drive in Calabasas when he was struck from behind by sheriff’s Deputy Andrew Wood, who allegedly was distracted by a mobile computer in his patrol car. Olin died at the scene.

“It’s just an outrageous thing that happened. There should be some penalty,” cyclist Marion Duigman said.

The D.A.’s Office announced last week that Wood, who’s served 16 years with the department, wouldn’t face charges because there was insufficient evidence to prove the deputy was being negligent.

Protesters argue deputies are trained that using a mobile computer while operating a vehicle is “inherently unsafe.”

Wednesday’s ride ended at Grand Park, outside Lacey’s office at 210 West Temple Street, where they held a candlelight vigil.

“A moment of inattentiveness can kill. And whether you’re a policeman or not, it’s not okay to drive unsafely,” said Yield To Life member Randi Zabriski, over a megaphone at the demonstration.

The event was organized by the Los Angeles County Bicycle Coalition, Yield to Life, and Ghost Bikes. For more information about their call for action click here.