A “natural experiment” behind bars. Prisons appear to be suitable laboratories to study the concept of herd immunity during the pandemic because they contain hundreds or thousands of people confined together who have contracted the coronavirus. The idea is to study how the virus spreads—and subsides—behind bars to develop more effective treatments for prisoners and prison staff. One team of researchers, in Ohio, has contacted state corrections officials to get data about a COVID-19 outbreak at the Marion Correctional Institution. Over 2,000 prisoners have tested positive, and 13 have died, since the virus arrived there weeks ago. TMP’s Jamiles Lartey has our story. The Marshall Project

Another night of unrest. More protests, some violent, in Washington, D.C. Trump ushered Friday night to White House bunker. The New York Times One symbol of the unrest in New York City? Burned out police cars. The New York Times Illinois’ governor calls out the National Guard after hundreds are arrested in Chicago. Chicago Tribune Officials in Boston handed out masks to peaceful demonstrators. Boston Globe Related: Police seek a forceful restoration of control through more violent, aggressive tactics but mostly only make things worse. The Washington Post Law enforcement officials focus on the possibility of extremist groups influencing protests through online disinformation campaigns and other methods. Associated Press The world looks on, incredulous and increasingly angry. The New York Times

Life as a police chief in Minneapolis. Things have gone from bad to worse for Medaria Arradondo, the first black police chief in Minneapolis, who took the job three years ago after a cop shot and killed Justine Damond, an unarmed Australian woman. That was one year after the police shooting death of Philando Castile, which was one year after the police shooting death of Jamar Clark. The Wall Street Journal Related: Keith Ellison, Minnesota’s attorney general, will spearhead the prosecution of Derek Chauvin, the now-fired Minneapolis police officer charged with murder and manslaughter in George Floyd’s death. Associated Press More: Over 4,100 arrests so far, an incomplete count. Associated Press Relative peace in Baltimore. Baltimore Sun Not so in Philadelphia Sunday night. Philadelphia Inquirer

The feds weigh in on protests. “Groups of outside radicals and agitators are exploiting the situation to pursue their own separate, violent, and extremist agenda,” U.S. Attorney General Bill Barr said Sunday. Justice Department Barr was at the Justice Department in 1992 when protests flared and riots erupted over the Rodney King verdict in California. The Wall Street Journal The president says he’ll designate Antifa a “terrorist” group. He has no legal authority to do so. The New York Times “Riots,” “violence,” even “protest.” How words matter in a time of strife. USA Today More: Protests, vandalism, force closure of Los Angeles County courts. Los Angeles Times Protests spread to Chicago suburbs Sunday. Chicago Tribune Scenes from a weekend of anger. The Washington Post

Life as a protester in Minneapolis: “What I want Americans to realize when they watch those images on TV is that they represent far more than the sum of the flames.” NBC News Protesters in California: “I’m not one of the people vandalizing, but honestly, I get it. They feel like actions speak louder than words.” Los Angeles Times More: In New Jersey, Missouri, California and other states, some police officers joined with demonstrators protesting police brutality. Forbes In Detroit, protests Saturday “ultimately seemed little to do with racial justice and more about anarchy and malicious property destruction.” Detroit Free Press Protests erupt all over the world in solidarity with U.S. demonstrators. NBC News

Baltimore blues. Voters this week will choose a new mayor following a wide-open election to run a city beset with gun violence, dubious policing and political mismanagement. A significant majority of residents say that lowering the murder rate is the most urgent problem facing the new mayor—limiting the spread of the coronavirus doesn’t come close. Here’s a look at what is essentially a four-way race in its final days. Politico Related: The focus among candidates is on how to stop the city’s unremitting gun violence problem. Baltimore Sun TMP Context: David Simon on the decline of “real policing” in the city. The Marshall Project

In Louisville, Kentucky, protests have centered around the police shooting of Breonna Taylor. The city, like so many others, has a long history of police brutality. HuffPost

Kevin Harrington spent 18 years in prison for a murder he didn’t commit, before he was exonerated. Then he became the happiest man under quarantine in Michigan. Los Angeles Times

Colorado officials had big plans to overhaul the state’s broken mental health system, which dumped too many ill people into prisons. COVID-19 ruined those plans. PBS

Corrections officials in Louisiana are still sending prisoners out to work in dirty, dangerous poultry plants that are breeding grounds for the coronavirus. The Appeal

Fate Winslow, serving a life-without-parole sentence in the Louisiana State Penitentiary as a habitual offender after a nonviolent marijuana crime, worries about the spread of COVID-19 within the confines of the aging and crowded Angola prison. Reason

NFL owners chose the knee on the neck. Colin Kaepernick took that knee on the football field because of what we’ve seen over the past week on countless streets in America. The Washington Post More: “Procedural justice” in policing takes you only so far. Maybe it’s time to divert money from police budgets to build up communities instead. The Guardian

A police at war with those they are sworn to protect and serve. On the streets of America this past week we saw what police militarization looks like. The Atlantic On the streets of New York City, the nation’s largest police force takes aim. The New York Times Police kill because the law allows them to do so. The American Conservative Tweets of sympathy aside, the police won’t change. Slate Violent white “protesters” aren’t helping the situation. Detroit News

Making a bad situation worse. Federal immigration officials aren’t just refusing or failing to test detainees for COVID-19. They also are transferring asymptomatic people from one prison to another, further endangering public health and safety. Miami Herald More: ICE agents aren’t adequately testing all detainees before deporting them. Miami Herald

The yelps of liberty. The “same right-wing movement that cheers President Trump’s draconian immigration crackdowns in the name of the rule of law is now in defiance mode against the lockdowns.” Reason More: U.S. Supreme Court Justice Brett Kavanaugh forgets the law, ignores the facts, in ruling on a church’s right to expose hundreds to COVID-19. Slate

The Michael Flynn case for dummies. It’s critical to separate the relevant from the irrelevant as the White House and Justice Department try to complicate the story of the president’s former national security advisor who twice pleaded guilty to lying to the FBI. Just Security More: Trump, Barr, fire Dana Boente, the FBI’s top lawyer, after he refuses to toe the company line about the Flynn case. NBC News

Obituary of the Day: Dave Patrick Underwood, a contract security officer working for the Homeland Security Department, was shot and killed during protests in Oakland, California. Associated Press

Podcast of the Day: Takes a close look at life in solitary confinement in Massachusetts’ prison system. Slate TMP Context: I developed agoraphobia in prison. The Marshall Project

Land Grab of the Day: Trump administration officials are taking advantage of COVID-19 lockdowns to survey private land along the Mexican border while owners are confined indoors. The goal is to expedite construction of the border wall. The New York Times

Alarming Trend of the Day: Opioid overdose deaths have skyrocketed in Chicago during the pandemic. Those addicted can’t get the medicine and treatment they need. ProPublica

Quote of the Day: Nikki Addimando shot to death her abusive partner in upstate New York in September 2017. She refused to plead guilty, asserting self-defense. She quickly was found guilty. “If I had taken a plea, I would have wondered every single day I served: ‘What if I spoke, what if I was brave?’” she said from prison. Type Investigations