On November 14, 1982, Wałęsa was released. However, on December 9 the "SB" carried out a large anti-Solidarity operation, arresting over 10,000 activists. On December 27 Solidarity's assets were transferred by the authorities to a pro-government trade union, the All-Poland Alliance of Trade Unions ("Ogólnopolskie Porozumienie Związków Zawodowych", or "OPZZ"). Yet Solidarity was far from broken: by early 1983 the underground had over 70,000 members, whose activities included publishing over 500 underground newspapers. In the first half of 1983 street protests were frequent; on May 1, two persons were killed in Kraków and one in Wrocław. Two days later, two additional demonstrators were killed in Warsaw.