Democratic presidential candidate Hillary Clinton is surrounded by security as she poses for a photo with a supporter at a campaign event at the Old South Meeting House, Monday, Feb. 29, 2016, in Boston.
Democratic presidential candidate Hillary Clinton is surrounded by security as she poses for a photo with a supporter at a campaign event at the Old South Meeting House, Monday, Feb. 29, 2016, in Boston. Elise Amendola AP
Democratic presidential candidate Hillary Clinton is surrounded by security as she poses for a photo with a supporter at a campaign event at the Old South Meeting House, Monday, Feb. 29, 2016, in Boston. Elise Amendola AP