In the weeks since George Floyd was killed by the Minneapolis police officer Derek Chauvin, Americans have been confronting hard questions about bias and racism within law enforcement — and what the role of the police should be. In the process, many have asked whether the culture of policing can be changed or if the system needs to be reimagined entirely. Today, we talk to an officer at the center of that debate inside one of the country’s largest police unions. Guest: Vince Champion, the southeast regional director of the International Brotherhood of Police Officers. For more information on today’s episode, visit nytimes.com/thedaily  Background reading: Protesters across the country are calling for the abolition of police forces. But what would that actually look like?Last week, the House passed a sweeping police overhaul bill, aimed at combating racial bias and excessive use of force, by a vote of 236 to 181. The bill is not expected to pass the Republican-controlled Senate.