The day after the march, President Peña Nieto thanked Mexico City's mayor, Miguel Ánhel Mancera, and his police for their coöperation with federal authorities in upholding order in the Zócalo.
All that said, the cities and localities in which the protestors have gathered do have an obligation to uphold order and to safeguard public health and safety.
Spokesman Jay Carney also says Obama hopes the right balance can be reached between protecting freedom of assembly and speech with the need to uphold order and safeguard public health and safety.
Laying down the law while failing to enforce it is no way to uphold order, but that is how things stood before America and Britain acted (almost) alone, and how they might still stand had France and the rest of the permanent five managed to stop them.
"The scriptures and Christian tradition call for people to be treated decently and mercifully, but there's also the distinction between the obligations of the civil state, which is of course to uphold order and law, and the church, which is of course to extend mercy and compassion to all people".
Bimbo obtained a federal court order barring the move, and late last month an appeals panel in Pennsylvania upheld the order.
A judge issued a national order preventing Obama's plan from going into effect, and the 5th Circuit Court in New Orleans upheld that order.
The Supreme Court upheld the order in 2011 after the state appealed.
The Supreme Court can't get enough reminders that, to its shame, it upheld that order, in the Korematsu decision.
