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On the night of Robert F. Kennedy's assassination in 1968, a photographer caught an image of the presidential candidate just after he was shot. In it, a young hotel worker named Juan Romero cradles Kennedy's head, looking up, stunned. At the time, Romero was just 17-years old. That night, that photo, and everything that followed changed his life forever.

Also: In Los Angeles, gentrification is affecting immigrant communities as once gritty downtown neighbourhoods become trendy places to live Activist and lawyer Lizbeth Mateo becomes the first unauthorised immigrant named to a statewide post in California; In Mexico City we visit a neighbourhood called \\u2018Little LA\\u2019; Finally, we take a tour through a score of Los Angeles\\u2019 of global ice cream shops.

(Senator Robert F. Kennedy stands among supporters in the main ballroom of the Ambassador Hotel, just after claiming victory in California's presidential primary. The Senator was shot moments later as he left the ballroom. Credit: Bettmann/Getty Images)