Chicago Gun Violence: 4 Dead, 22 Injured over Mother's Day Weekend
Summer Moore was struck at a family gathering Friday.
Chicago Homicides Have Fallen With New Police Tactics
Chicago police have focused in on gang activity.
6-Month-Old Dies After Drive-by Shooting
Jonylah Watkins is Chicago's latest tragic homicide victim.
$40,000 Reward Offered in Hadiya Pendleton Killing
Police hope reward will compel witnesses to come forward.