All of the victims wounded in the attack are expected to make a full recovery, including the mother of the woman who the vigil was for.
The group was gathered at a vigil for a gun violence victim in the 500-block of East 75th Street in the city's Chatham neighborhood just after 8 p.m., when police said at least one person opened fire on them.
A red balloon in the shape of the heart floating on the sidewalk was the only thing left of Wednesday night's memorial for Jamayah Fields. The 20-year-old woman from South Bend, Ind. was shot and killed Monday near Spencer Elementary Technology Academy in Chicago's South Austin neighborhood. Community activists said her slaying was gang-related.
But the peaceful vigil for Fields near a restaurant in the city's Chatham neighborhood ended in incredible violence. Sources said a rival gang heard about the gathering through social media and targeted some of the people there, who they believe may have been involved in a recent shooting in the suburbs.
"You can't post nothing on Facebook, you can't post nothing on Instagram whenever you're doing something like this. Not in Chicago," said Leon Jones, manager of Chicago Wingz Around the World.
Angela Jackson said she was returning home when she saw the shooting happen.
"I was just getting off the bus - it was just - shooting! I didn't have time to look around. I grabbed my baby and started running," Jackson said.
Fields' 12-year-old niece suffered a graze wound to the head and was taken to Comer Children's Hospital, where she was listed in good condition. She was treated and released.
A 16-year-old boy was shot in the neck and was taken to Advocate Christ Medical Center, where he is listed in serious condition.
Two 17-year-old boys showed up at Jackson Park Hospital and Medical Center with arm wounds.
A 20-year-old woman was shot in the right leg. She was taken to Stroger Hospital, where her condition stabilized.
Another 20-year-old woman was shot in the left leg and buttock. She was taken to Christ, where she is listed in serious condition.
A 34-year-old woman, who police initially reported was a 43-year-old woman, shot in the right hand. She was also taken to Stroger, where her condition also stabilized.
Relatives said Fields' mother was wounded in the attack. She remains hospitalized after having surgery on her right hand.
"We're asking you not to retaliate. Why are you shooting in the first place? We know we need help in this city. But you're not making it any better and the people who know who shot them are not making it any better by being quiet," Andrew Holmes, community activist, said.
Area South detectives are investigating. No one is in custody.
The shooting occurred about 24 hours after President Donald Trump tweeted he would "send in the Feds!" if the "carnage" in Chicago does not stop.
If Chicago doesn't fix the horrible "carnage" going on, 228 shootings in 2017 with 42 killings (up 24% from 2016), I will send in the Feds!— Donald J. Trump (@realDonaldTrump) January 25, 2017
The city is on pace to have the same amount of murders this month as there were in January 2016. Last year was the deadliest in Chicago in nearly 20 years.
Since the tweet, according to Chicago Police Department data, at least 16 people have been shot where residents just want the killing to stop.
"We need improvement in Chicago to stop all the violence," Jackson said.
But Jones, who plans to open for business Thursday despite bullet holes in his windows, pointed out there are already federally-funded task forces in these neighborhoods - and crime is not going down.
He said what he really wants is for Trump to invest in growing businesses in Chicago's most challenged communities.
"He needs to bring the money - he got it," Jones said.