"This is unreal. I'm living a nightmare. I'm living my worst nightmare." William's mother Beverly Williams said.
Williams said a man groped Rahsaun's girlfriend and she called him for help.
Rahsaun confronted the man to defend her, Williams said.
Police said that man then pulled out a gun and shot Rahsaun three times.
By the time Williams ran out to see her son, the ambulance sped past her.
Police are still searching for his killer.
"This is what he do. He sees he's more about not letting anybody be taken advantage of," Williams said.
"I'd be coming with groceries and he'd be standing in front of the building with his friends. And I'd come across and he would just come on over to me and just grab the court from the bags. He was like, I got it, you know, it's okay. I got I got it. No, no, no. I got it. I got it," Carmen Morales, a friend said.
Messages at his vigil tonight read, "I thank you for always making me smile or laugh even when some days I didn't have a reason to."
Rahsaun was known for his sense of humor and dressing up as Martin for Halloween.
When he was 2-years-old his mother nicknamed him Badness.
"When I was pregnant with him, I fell in the bathtub nine months, broke his ankle. I knew he was to be a little some kind of problem, but he didn't. He was he was a good kid," Williams said.
Rahsaun leaves behind a 17-year-old daughter and two sons, ages four and two-years-old.
Family members were heartbroken his two sons would never get to know their father, the way the folks out here and family knew him.
A GoFundMe has been set up to help Rahsaun's family.
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