India, Sept. 13 -- A family is seeking justice after a man was pushed to his death from a CTA train in Chicago. A 15-year-old girl, who was one of three people who allegedly pushed 29-year-old Kyle Bickham to his death from a moving CTA Red Line train near the 69th Street station during an altercation, has been charged.

Here are five things to know about Kyle Bickham:

Kyle's family demanded answers after his death, asking how this happened and whether more could have been done for his safety.

"Once you step on that platform, what kind of security do you have?" Latanya said.

"I'm trying to advocate for my son, and no one was there to advocate for him," Bickham Sr. added. "No one was there to help him while he was hurting."

The 15-year...