Mark A. Higgins, a 28-year-old resident of Chicago, was fatally shot on October 31, 2016. His death came during a year of sharply rising violence in the city: Chicago recorded 764 homicides in 2016, a dramatic increase that affected neighborhoods across the city and drew attention from city officials, community activists, and researchers.

Higgins’ killing occurred on Halloween night amid broader trends cited for the surge in killings, including rising tensions between communities and law enforcement and an increase in illegal firearms. His death is one of many that families and neighborhoods still reckon with from that year.

If anyone knew Mark Higgins or has information about his shooting, please share what is remembered about him or the circumstances that night.