The $1.2 million statue of the Virgin Mary is slightly shorter than New York's Statue of Liberty, but seven meters higher than Rio's famed image of Christ.
Protests organizers are said to have links with organized terrorist groups, such as the Túpac Amaru Revolutionary Movement (MRTA) and the Shining Path.
An explosion caused by — so far — unknown reasons left 25 people dead and more than 100 injured at the Mexico City headquarters of state-owned oil firm Petroleros Mexicanos (Pemex) late Thursday.