Pontiff loses his cool with person who almost knocked him down

Video footage showed that while the pope was walking at the edge of a crowd in an stadium, he stopped to greet children who were sitting.

Aides and security men stopped the pope from falling to the ground.

After he returned to an upright position, his face turned angry.

He looked at the person, raised his voice and said twice in Spanish: "Don't be selfish!"

It was not clear if the person who pulled the pope was a man or a woman.