In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Q: Passage: Using strikes and other protest actions, Solidarity sought to force a change in government policies. In some cases, as in Bielsko-Biała, Solidarity managed to force corrupt officials of the government to lose their jobs. At the same time, it was careful never to use force or violence, so as to avoid giving the government any excuse to bring security forces into play. After 27 Bydgoszcz Solidarity members, including Jan Rulewski, were beaten up on March 19, a four-hour warning strike on March 27, involving around twelve million people, paralyzed the country. This was the largest strike in the history of the Eastern bloc, and it forced the government to promise an investigation into the beatings. This concession, and Wałęsa's agreement to defer further strikes, proved a setback to the movement, as the euphoria that had swept Polish society subsided. Nonetheless the Polish communist party—the Polish United Workers' Party (PZPR)—had lost its total control over society.Yet while Solidarity was ready to take up negotiations with the government, the Polish communists were unsure what to do, as they issued empty declarations and bided their time. Against the background of a deteriorating communist shortage economy and unwillingness to negotiate seriously with Solidarity, it became increasingly clear that the Communist government would eventually have to suppress the Solidarity movement as the only way out of the impasse, or face a truly revolutionary situation. The atmosphere was increasingly tense, with various local chapters conducting a growing number of uncoordinated strikes as well as street protests, such as the Summer 1981 hunger demonstrations in Poland, in response to the worsening economic situation. On December 3, 1981, Solidarity announced that a 24-hour strike would be held if the government were granted additional powers to suppress dissent, and that a general strike would be declared if those powers were used.
A:
What was the name of what was careful to never use force or violence?