Charlie Hopkins was imprisoned in Alcatraz in the 1950s, where he spent three "lonely" years.

At the beloved attraction in San Francisco Bay, visitors could scarcely believe President Trump had suggested turning Alcatraz back into a penitentiary.

Many California officials responded with a range of ridicule and concern about reopening the nearly century-old prison. State Sen. Scott Wiener, a Democrat, called it “unhinged.”