Gritar Consignas, Decir Consignas.

To chant (slogans, names, etc)

"The crowd were chanting the name of their football team."
Cambridge Dictionary Online.

"Demonstrators chanted anti-government slogans in the square."

Cambridge Dictionary Online. 

In News:

"... video posted on the Internet showed young people chanting slogans against the ruling family and being drowned out by gunfire."

The Christian Science Monitor.

Foto: One Pakistan.