Final answer:
The Stonewall Inn, Alcatraz Island, and Delano, California are linked as historical sites of significant social activism and civil rights movements, including the LGBTQ rights movement at Stonewall, Native American rights on Alcatraz, and labor rights in Delano.
Step-by-step explanation:
The common link among the Stonewall Inn in Greenwich Village, Delano, California, and the federal prison on Alcatraz Island in San Francisco Bay is that they were all sites of major activist events which have become historical landmarks due to their impact on movements for social change and civil rights. The Stonewall Inn is famously associated with the Stonewall Riots of 1969, which kicked off the modern LGBTQ rights movement. Alcatraz Island was the site of a significant occupation by Native American activists, part of a growing civil rights movement among indigenous peoples in the United States during the same era.
Both the Stonewall Riots and the occupation of Alcatraz reflected broader societal struggles at the time: the former pioneering the gay liberation movement and latter highlighting issues of Native American rights and sovereignty. These events stand as reminders of the ongoing fights for equality and recognition of marginalized communities. Although Delano, California is not detailed in the context given, it is historically significant for being the birthplace of the United Farm Workers movement led by Cesar Chavez and Dolores Huerta, marking yet another focal point of civil rights activism during the 1960s.