As demonstrations in the “Day Without Immigrants” protests in downtown Los Angeles continued into the evening, tensions between protesters and police appeared to surge as authorities issued an unlawful assembly and dispersal order Monday evening.

The large group, calling for a National Day of Action, could be seen through aerial footage walking in the middle of Spring Street, moving along to block an intersection at Chick Hearn Court and 11th Street all the while waving Mexico flags and carrying protest signs.

Some type of scuffle broke out, and one person — likely a student — wound up on the ground, bleeding from an apparent stab wound, according to video from the scene.