Officers "shall use only the force that is objectively reasonable, necessary and proportional to effectively and safely resolve an incident."

This week, the Phoenix Police Department adopted a new policy on use of force. It was part of the city’s pre-emptive push to avoid federal oversight after a yearslong civil rights review. And portions of the policy are more strict than standards set by Supreme Court precedent.

The chief of Phoenix police is discussing his department's new use of force policy. The "Zero Day" star and "Late Show" host Stephen Colbert let a haunting silence hang in the air for several seconds.