Why did this man die while in custody in Georgia? His family is asking for an investigation--they say it's a David and Goliath situation:

All Yanga Williams knows is her Fred with the easy smile and accommodating “sure, baby” attitude is gone. She doesn’t know why, and she can’t begin to tell their four children that daddy isn’t coming back. Grieving family members are left with many unanswered questions about the death of 31-year-old Frederick Jerome Williams. He died Thursday morning after struggling with authorities at the Gwinnett County Detention Center.

Williams was removed from life support when doctors at Gwinnett Medical Center determined he was brain dead, according to Williams’ family members. “He was just the kind of person that worshiped me and the kids,” Yanga said Thursday. “No matter what I did, no matter what I presented him with he was very supportive. It was always, ‘sure, baby.’”