Hundreds of thousands of people gathered in the streets of Catalonia on Tuesday to join a general strike and protest violence that left nearly 900 people injured this weekend, when Spain’s national police forces tried to prevent Catalan residents from voting for secession.

#Catalonia #VagaGeneral3O pic.twitter.com/5hhOnK9d50

— Our Revolución (@Latinos4Bernie) October 3, 2017

Ahead of Sunday’s independence vote, which Madrid claims is unconstitutional, the government shipped additional forces to Catalonia. Spanish police not only seized ballot materials and closed polling stations but many also physically behaved violently toward the region’s residents, which was captured in photos and videos that were widely shared online.

Despite Madrid’s efforts to stymie the referendum, preliminary polling has shown voters overwhelmingly supported Catalan independence. Following the vote, Spain’s national government is under mounting global pressure, including from the U.N. High Commissioner for Human Rights, to resolve the regional independence dispute and investigate allegations of abuse by police.

Those concerns were echoed in Barcelona, the Catalan capitol, on Tuesday, where hundreds of thousands of people—”many draped in the blue, yellow, and red Estelada flag used by Catalan separatists”—stopped traffic and marched through the streets chanting “independence” and “the streets will always be ours,” the Guardian reports.