Cheryl Corley

Editor's Note: This story contains strong language that some may find offensive.

The smell of blood hung in the air where 17-year-old Gerald Morgan was shot, as firefighters began washing down the sidewalk around the front door of a home in New Orleans East last month.

Police say at least two gunmen jumped out of a car, opened fire, ran near a two-story house and kept shooting, also hitting a 4-year-old boy inside. The teenager died at the hospital. The boy was listed in stable condition. Police have not offered a theory for the cause of the shooting.

No one is certain exactly how the protest chant "hands up, don't shoot" got started, though Tory Russell says he has a good idea. Russell is co-founder of Hands Up United, an activist group which formed after the death of Michael Brown, the 18-year-old black man who was fatally shot by a white police officer in Ferguson, Mo., last August.

"It came after Dorian Johnson, the guy that was with Mike Brown, and others said that Mike Brown had his hands up," Russell says.

Businesses in Ferguson, Mo., are bracing as the city prepares for peaceful protests marking the first anniversary since it was embroiled in violence following the death of 18-year-old Michael Brown. Brown was unarmed when he was shot by a police officer on Aug. 9. In November, many businesses were looted, vandalized and set on fire after a grand jury decided to not indict Wilson. Since then businesses have been working to rebuild.

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Can racism cause post-traumatic stress? That's one big question psychologists are trying to answer, particularly in the aftermath of the shooting at the historically black Emanuel AME Church in Charleston, S.C., and the recent incidents involving police where race was a factor.

What's clear is that many black Americans experience what psychologists call "race-based trauma," says Monnica Williams, director of the Center for Mental Health Disparities at the University of Louisville.

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(SOUNDBITE OF SONG, "BRING IT ON HOME TO ME")

SAM COOKE: (Singing) Bring it on home to me. Yeah. Yeah. Yeah.

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The images from Baltimore of demonstrations, police in riot gear, looting and outbreaks of violence are familiar to some other cities after encounters with police ended in death for unarmed individuals — primarily black men.

Officials say what comes from those tragic encounters can be important lessons about policing and moving forward.

Since August, several U.S cities have been at the center of protests about policing and race. Activists in Ferguson, Mo., demonstrated for months in the aftermath of the shooting death of Michael Brown, a black, unarmed 18-year-old killed by a white police officer last summer. They also have demanded resignations and pushed for new laws in what organizers say is the start of a national movement for justice.

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And we turn now to NPR's Cheryl Corley who is in Ferguson. She's been listening to reaction today. The mayor of Ferguson, James Knowles, held a news conference this evening. And Cheryl, what did the mayor say he's going to do in response to this report from the Justice Department?

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Right next to the Chicago River on the city's North Side, Lathrop Homes, with its black, white and Latino residents, is considered the city's most diverse public housing.

It's also on the National Register of Historic Places. And with 925 low-rise units on about 30 acres, it's big. But these days, only a fraction of those apartments are occupied.

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This is the time of year when it's not uncommon to see big trucks barreling down highways and streets spreading road salt.

Steve Corsi, a hydrologist with the U.S. Geological Survey, says that translates into high levels of chloride concentrations for rivers like the Milwaukee in Wisconsin or 18 other streams near urban areas in Illinois, Ohio, Colorado and several other states.

"At many of the streams, concentrations have now exceeded those that are harmful to aquatic life," he says.

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It's not certain that a grand jury decision in a Ferguson, Mo., case will be announced this weekend, but officials, protesters and city leaders have been preparing.

The grand jury, which will decide whether a white police officer who shot an unarmed black 18-year-old will face charges, met behind closed doors Friday. The city is bracing for what comes next.

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In the weeks after 18-year-old Michael Brown was shot by a white police officer in Ferguson, Mo., protesters gathered daily at the site of a burned-out convenience store.

About a block away, the empty lot of a boarded-up restaurant became the campsite for a group of young activists called the Lost Voices. During the protests, the group "invited all the people who can't come out every day and wanted to share the experience with us," says Lenard Smith.

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Protests in Ferguson, Missouri heated up again this week. That's after a St. Louis paper reported the leaked findings of a second autopsy report on Michael Brown. It found that the 18-year-old black man was shot at close range by a white police officer.

When it comes to studying sexual violence, college surveys often don't include students at historically black colleges and universities, or HBCUs. But one major study found sexual assaults are lower on those campuses than others.

Some question those numbers and whether HBCUs have the resolve to openly address the issue of campus rape.

Of the 100 HBCUs in the country, Morgan State University in Baltimore ranks in the top 15 for academics.

In the suburbs of Chicago, a stark reminder of the toll of heroin and prescription-pill addiction is making the rounds as a lawn exhibit. One hundred fake tombstones and banners are set up at a new location every week as a precursor to International Overdose Awareness Day.

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New information was released Friday about the shooting death of an unarmed black teenager in Ferguson, Mo. The police chief finally released the name of the officer who shot Michael Brown and an incident report listing Brown as a suspect in a recent convenience store robbery. Missouri Gov. Jay Nixon is promising a full investigation.

A fifth night of violence erupted in a St. Louis suburb, as Ferguson police again clashed with protesters. Community frustration has only escalated since the police shooting of Michael Brown, an unarmed black teenager on Saturday. Ferguson's police chief called for calm, while reiterating that he will not release the name of the officer who shot Brown. Missouri Gov. Jay Nixon also spoke out for more peaceful relations between police and protesters.

There was no pomp and circumstance, no procession with classmates, but on Friday a school district in Illinois finally handed Alva Early his high school diploma — more than five decades after he attended Galesburg High School.

In 1959, Galesburg banned Earley from graduating and denied him a diploma after he and other African-Americans had a picnic in a park that was unofficially off-limits to blacks.

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