Use of the death penalty has been waning for years, but the debate about whether or not government should have the power to condemn any of us to death continues to rage on.

Does it deter people from committing murder?

Does it save taxpayers money from not having to imprison murderers for life?

Are innocent people being executed?

Maurice Chammah writes for The Marshall Project and is the Author of Let The Lord Sort Them: The Rise And Fall Of The Death Penalty. He and Spike are going to do a deep-dive into this debate.