Literally, it's a shorthand reference to the FBI
study which found that half (approximately 50%) of violent crime was perpetrated by a
small minority making (13% of the population). Implicitly, it's a refutation of the claim you can conclude that law enforcement is systemically
racist based on the fact that members of the minority group account for a disproportionate number of violent confrontations with the police.
She
said, "how can you deny the cops are
racist when so many more black men are
shot," and he just said, "1350."