Martin O'Malley Subtly Jabs Hillary Clinton With Marriage Equality Video

The former Maryland governor notes that "history celebrates profiles in courage, not profiles in convenience."

BEDFORD, NH - MARCH 31: Former Maryland Governor Martin O'Malley speaks at "Politics & Eggs" at the Bedford Village Inn March 31, 2015 in Bedford, New Hampshire. O'Malley, who served two terms as Maryland Governor, has been visiting New Hampshire and is considering a run for president.

Photographer: Darren McCollester/Getty Images

In case anyone forgot, former Maryland Governor Martin O'Malley wants us to know that he's more liberal than Hillary Clinton.

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