The 62-year-old died after he was punched by teenagers who were allegedly playing a game called ''Pick 'Em Out, Knock 'Em Out.''
Activists and neighbors gathered in the 6400-block of North Washtenaw to remember what happened to Mora and to take a stand against violence in Chicago.
Mora was allegedly attacked by three suspects, simply at random, early last month. He was in an alley near the site of Wednesday's vigil, collecting cans, when the suspects floored allegedly floored Mora with one punch.
Mora cracked his skull. He died a day later of a brain injury.
A judge has denied bond for 18-year-old Nicholas Ayala, 17-year-old Anthony Malcolm and 16-year-old Malik Jones.