Carl Spencer was 21 when he was fatally shot on September 26, 2011, on a sidewalk in the Washington Park neighborhood of Chicago. His death came during a year of unusually high violence citywide, when Chicago recorded more than 430 homicides.

The case is presented as part of a broader pattern that challenged law enforcement and city officials in 2011; efforts to boost police presence and engage community groups are noted but said to have often fallen short amid deeper social problems.

If anyone knew Carl Spencer or was in Washington Park on September 26, 2011, does anyone have information about what happened that day?