Here's what I bet happened.

Gangbanger attending funeral had a pistol tucked in his waistband, safety off. Gangbangers pants started falling down, so he goes to pull them up snagging the trigger.
Bullet goes through his leg, ricocheting into the mother.

Another accident that could have been prevented with a holster.

Fun fact. 35% of black males (might just be blacks, not sure) in Florida are felons. "Twenty-seven percent of the state’s African American population cannot vote because of their criminal histories." - jacksonville.com