Large crowds rallied on Saturday in Bucharest, Romania’s capital city, the latest in ongoing mass demonstrations against revisions to the country’s corruption laws that have gripped the country since last year.

Braving snowy conditions and freezing temperatures, protesters gathered in the city’s University Square before marching to the Parliament. Once outside the building, the crowd, whose numbers were estimated to be in the tens of thousands, sang the national anthem, and people waved their cellphones in the air, creating an impressive display of light, according to the national press agency Agerpres.