Earlier this year, a Catholic priest published a book entitled "Mercy: What Every Catholic Should Know," focusing on doctrine and discipleship issues that, ordinarily, would not cause controversy.

But these are not ordinary times. Acting as a Catholic chaplain at the Massachusetts Institute of Technology, Father Daniel Moloney tried to apply his words about mercy and justice to the firestorm of protests and violence unleashed by the killing of George Floyd by a white Minneapolis police officer.

In the end, the priest resigned at the request of the Archdiocese of Boston, in response to MIT administration claims that Moloney, in a June 7 email, violated a campus policy prohibiting "actions or statements that diminish the value of individuals or groups of people."

Moloney wrote, in a meditation that defied simplistic soundbites: "George Floyd was killed by a police officer, and shouldn't have been. He had not lived a virtuous life. He was convicted of several crimes, including armed robbery. … And he was high on drugs at the time of his arrest.

"But we do not kill such people. He committed sins, but we root for sinners to change their lives and convert to the Gospel. Catholics want all life protected from conception until natural death."

Criminals have human dignity and deserve justice and mercy, the priest said. This is why Catholics are "asked to work to abolish the death penalty in this country."

On the other side of this painful equation, wrote Moloney, police officers struggle with issues of sin, anger and prejudice. Their work "often hardens them" in ways that cause "a cost to their souls." Real dangers can fuel attitudes that are "unjust and sinful," including racism.

In a passage stressed by critics, the priest wrote that the officer who knelt on Floyd's neck "until he died acted wrongly. … The charges filed against him allege dangerous negligence, but say nothing about his state of mind. … But he showed disregard for his life, and we cannot accept that in our law enforcement officers. It is right that he has been arrested and will be prosecuted.

"In the wake of George Floyd's death, most people in the country have framed this as an act of racism. I don't think we know that."