About 50 military veterans and their supporters protested an appearance by Jane Fonda in western Maryland.

The 77-year-old was at the Weinberg Center for the Arts in Frederick for a speaking engagement Friday.

The Frederick News-Post reports that many of the protesters served in Vietnam and carried signs that read: "Forgive? Maybe. Forget? Never."

Fonda told the audience that she made a "huge mistake" that led many to think she was against soldiers fighting in Vietnam, and that it's something that she'll take to her grave. She says she understands their anger and that it makes her sad.

Fonda drew the ire of many Americans when she visited North Vietnam at the height of the Vietnam War, leading some to call her "Hanoi Jane."