Answer: Lynching
Because it is another term for being hanged
One of the main ways in which the population of Western Europe changed after the collapse of the Roman Empire is that it became more diverse, since the official borders of the Empire were no more. There was also increased lawlessness. <span />
It is <span>To perpetuate their existence by changing their goal or reason for existence,
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I believe the answer you are looking for is: "a violent or destructive protest." The government would be most likely to become involved in a union protest that is violent or destructive.