Patrick Eddington and James Craven:

Growing police power has gravely distorted interactions between cops and citizens. Officers arrive with not just a gun and body armor but with wide-ranging legal immunities and both the privilege and training to lie to you during questioning.

Now they want to force you to unlock your phone.

The amount of personal data we keep on our smartphones is almost immeasurable, a reality the Supreme Court recognized in 2014 when it ruled that police must comply with the Fourth Amendment warrant requirement to search your device. But your phone has a simpler safeguard: a password that, under the Fifth Amendment, you shouldn’t have to reveal unless the government overcomes your right against self-incrimination.