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There were protests Saturday around the country over the not guilty verdict in the trial of George Zimmerman for the slaying of teenager Trayvon Martin in Florida.

Hundreds turned out in Oakland to remember the dead teenager and call for federal action in the case. 

San Francisco Public Press Photo Editor Jason Winshell captured some key moments.

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The Rev. Lennox Yearwood Jr. leads a crowd in a chant alongside Oakland Mayor Jean Quan at a Trayvon Martin rally at the Ronald V. Dellums Federal Building in Oakland on Saturday. Photo by Jason Winshell/San Francisco Public Press
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A woman holds up a tribute to Trayvon Martin at a rally in Oakland on Saturday. Photo by Jason Winshell/San Francisco Public Press
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A mural in downtown Oakland features the face of Trayvon Martin in a black hoodie. Photo by Jason Winshell/San Francisco Public Press.
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Two women hold signs seeking justice for Trayvon Martin at a rally in front of the Ronald V. Dellums Federal Building in Oakland. Photo by Jason Winshell/San Francisco Public Press
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Nation of Islam minister and community activist Keith Muhammad addresses a crowd at a Trayvon Martin rally in front of the Ronald V. Dellums Federal Building in Oakland.

Jason Winshell is a photojournalist and investigative reporter whose current focus is AI and technology policy. His four-decade career as software engineer informs his reporting. In 2010, his photography was nominated by the San Francisco Museum of Modern Art’s SECA award, which recognizes the work of emerging artists in the Bay Area. His photo essay book, “Street,” documents every day life in San Francisco through 45 color photographs shot on the city’s streets.