MINNEAPOLIS (AP) - GOP presidential candidate Newt Gingrich and his wife Callista have been hit with glittery confetti by a protester during the couple's appearance at a book-signing in Minneapolis.

The man approached the Gingriches during the signing Tuesday afternoon at a downtown hotel. The man dumped a cracker box full of confetti on the pair and said "Stop the hate!"

Two Associated Press reporters witnessed the event. The man was quickly pushed out of the room by an event organizer.

Newt Gingrich was due to give a speech at the event sponsored by the Minnesota Family Council later in the evening.