Oakland police officers, wearing body cameras, form a line during demonstrations against recent incidents of alleged police brutality nationwide. Elijah Nouvelage/Getty Images hide caption

itoggle caption Elijah Nouvelage/Getty Images

Charlotte Police Chief Rodney Monroe answers questions from the group. Lisa Wolf/WFAE hide caption

itoggle caption Lisa Wolf/WFAE

Rev. Channing E. Phillips, (left) Rabbi Arthur Waskow, and Topper Carew on April 4, 1969, the night of the first Freedom Seder. Courtesy of Arthur Waskow hide caption

itoggle caption Courtesy of Arthur Waskow

Rick Ector trains new gun owners at a range just outside of Detroit. He supports more African-Americans getting permits to carry concealed weapons. Martin Kaste/NPR hide caption

itoggle caption Martin Kaste/NPR

Larenda Myres holds an iced coffee drink with a "Race Together" sticker on it at a Starbucks store in Seattle. Starbucks baristas will no longer write "Race Together" on customers' cups starting Sunday. Ted S. Warren/AP hide caption

itoggle caption Ted S. Warren/AP

Demonstrators of different races and religions from across the country united to take part in the historic march from Selma to Montgomery, Ala., 50 years ago. AP hide caption

itoggle caption AP

A makeshift memorial is seen on March 11 in Madison, Wis., in remembrance of 19-year-old Tony Robinson, who was fatally shot by a Madison police officer on March 6. Carrie Antlfinger/AP hide caption

itoggle caption Carrie Antlfinger/AP

Madison Mayor Paul Soglin addresses a crowd of protesters on Martin Luther King Boulevard in Madison, Wis., during a protest of the shooting death of Tony Robinson. Andy Manis/AP hide caption

itoggle caption Andy Manis/AP

Yonkers community activist Hector Santiago demonstrates the "stop-and-shake" with Lt. Pat McCormack of the Yonkers Police Department. The idea, Santiago says, is to get people to introduce themselves to cops on the street. Courtesy of Hector Santiago hide caption

itoggle caption Courtesy of Hector Santiago

Kathy Van Sluyters (left), Barbara Carr and Colleen Dickinson chat on a recently finished sidewalk across from Wildflower Terrace, a mixed-income apartment building in the Mueller development for people ages 55 and over. Julia Robinson for NPR hide caption

itoggle caption Julia Robinson for NPR

President Obama responds to a question from NPR's Steve Inskeep on Dec. 17 in the Oval Office. Mito Habe-Evans/NPR hide caption

itoggle caption Mito Habe-Evans/NPR

Whiteness Project participants were filmed talking about race. The project doesn't use their names, to encourage frankness. Feral Films, Inc. hide caption

itoggle caption Feral Films, Inc.