Testifying at a Senate hearing on Tuesday, FBI Director James Comey agreed that it is hard to address the issue of implicit bias in policing when there is no reliable data on the races of the people involved in police actions. “This is one of the most important issues we confront in the FBI — I think we confront as Americans,” Comey told Sen. Cory Booker (D-N.J.) who raised the issue of race and policing. “Every conversation, in my view, about the use of force and race and policing in this country is uninformed.” But Comey plans to change that:...