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Sitawa Natambu Jamaa has been incarcerated for 33 years at the Pelican Bay State Prison in Crescent City; 23 of them in the Security Housing Unit, also known as the SHU. He spends most of his time—up to 22 hours a day—in a small, windowless cell. His charge is murder, though his sister Marie Levin says he did not commit the crime.

After graduating from Fresno State in 1972, Dr. Ernest Marquez worked at The National Institute of Health until 2008. Marquez, who is is a Mexican American, tells his friend Judit Camacho what it was like to enter an industry in which he was a minority.