They packed the bar on Tuesday to mourn and celebrate the abbreviated life of a son, a friend and a fellow bicyclist killed just blocks away while riding home.

Earlier in the day, relatives and friends of the bicyclist, Matthew von Ohlen, left a white “ghost bike” — a tradition in the New York bike community when a cyclist dies — to mark the spot, 690 Grand Street in Williamsburg, Brooklyn, where the latest life was lost.

But even as the familiar rituals played out, Mr. von Ohlen’s death on Saturday had taken on an added weight because of the nature of the episode, the background of the victim and the reaction of the police.

Mr. von Ohlen, 35, was a founder of Bikestock, a bike repair vending machine business, and an avid bicycling proponent.