Explanation:
In the 1980s, Solidarity was a broad anti-bureaucratic social movement, using methods of civil resistance to advance the causes of workers' rights and social change. Government attempts in the early 1980s to destroy the union through the imposition of martial law in Poland and the use of political repression failed
They throw rocks at the officials.
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The Wilmot Proviso was a proposed law in the mid 1800s that would have banned slavery in territory taken form Mexico.
Please post the paragraph for a full answer.
