In 1953, President Dwight D. Eisenhower signed Executive Order 10450, which began a witch hunt for gay and lesbian employees in the federal government; it became known as the "lavender scare."

The order called for an investigation into federal employees and delineated specific qualities to look for that could possibly threaten national security — including drug addiction, criminal behavior, and "sexual perversion."

Photo by M. McNeill/Fox Photos/Getty Images.

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