The two teenagers both had promising futures. One was in college, and the other was headed there. Activists and ministers set up a demonstration Sunday outside of the home family's home where the two cousins were gunned down in hopes of calling attention to and ending the violence.
Relatives stood together and sang hymns Sunday outside of the West Side. They are a close-knit family united by their religious faith.
However, that faith has been put to the test following the Friday night murders of Williams and Day.
"It was wrong but I have to forgive you. I cannot let what you have done to my family take away our blessings. Vengeance is not ours. It's God's," said .
Williams was home for weekend from the University of Illinois in Champaign. Day was a high school student also enrolled in a program at DeVry University. They were both on the front porch when a lone gunman walked up and opened fire. Family members said they had never seen him before, and they have no idea why he targeted their house.
Members of the group Mothers Opposed to Violence Everywhere (MOVE) and Ceasefire are trying to track the shooter down.
"If you know that your child did this vicious act, talk to your child. Convince your child to give himself up," said MOVE's Louvenia Hood.
Police say they have no suspects and no one is in custody.
Family members of the victims say they want the killer to come forward, but they also pray for him and his family.
However, nothing will bring back their loved ones.
"We don't mess with nobody. The police said they were after somebody. I don't know that. Because we live here? We're not of the streets,"
Anti-violence groups ask anyone with information in the case to come forward.