Police hope someone might recognize the shooter, even though the video doesn't show him clearly.
Squire's girlfriend, 18-year-old Atiya Hallman, says he was struggling to turn his back on the Bloods. She says he was training to be an electrician.
His 14-year-old sister, Allayah, also said Squires wanted to get off the streets.
But Allayah says her brother "didn't think he'd make it to 18."
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