Anti-austerity protests that drew tens of thousands to the streets of Rio de Janeiro, Brazil, turned violent tonight as protesters set fire to the Legislative Assembly.

Other photos showed massive crowds filling the streets. News reports attribute the protests to a 10-cent hike in public transportation fares, which was apparently the straw that broke the camel’s back.

Similar protests are taking place in Sao Paulo and Brasilia, where protesters scaled the National Congress.