Photos: Tensions follow Mexico election

Thousands of protesters take to the streets in Mexico City on Monday, a day after the presidential election results were announced. Supporters of the opposition candidate were rallying against Enrique Peña Nieto, who declared victory late Sunday.

Thousands of protesters take to the streets in Mexico City on Monday, a day after the presidential election results were announced. Supporters of the opposition candidate were rallying against Enrique Peña Nieto, who declared victory late Sunday.