Demonstrators protested the death of Michael Brown on last summer in Ferguson, Mo., even as police sprayed pepper spray, shot smoke, gas and flash grenades. Joe Raedle/Getty Images hide caption

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Black Lives Matter activists confronted Democratic candidates Martin O'Malley and Bernie Sanders at a Netroots Nation event earlier this month. O'Malley used the phrase "all lives matter" twice, which he later apologized for. Ross D. Franklin/AP hide caption

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Johanna Fernández, co-curator of a new exhibition about the Young Lords, points to pages of the group's newspaper on display at the Bronx Museum of the Arts. Hansi Lo Wang/NPR hide caption

itoggle caption Hansi Lo Wang/NPR

Wall graffiti at Facebook headquarters in Menlo Park, Calif. The company released a diversity report last month showing that 70 percent of employees are male; African-Americans comprise 2 percent of it workforce. Robyn Beck/AFP/Getty Images hide caption

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The Eastside Bicycle Club on a 35 mile Saturday evening ride with stops for tacos. Carlos Morales hide caption

itoggle caption Carlos Morales