sabotage

Wikidata

https://www.wikidata.org/wiki/Q193518

Suppress counter revolutionaries, safeguard good circumstances!

Suppress counterrevolutionaries, safeguard good circumstances! (1951, August)

Defend our factories. Strengthen protection against fire and theft to prevent activities of spies

Defend our factories. Strengthen protection against fire and theft to prevent activities of spies (1951, October)

Raise alertness to take strict precautions against conflagrations

Raise alertness to take strict precautions against conflagrations (1954)

Heighten our vigilance, be strictly on guard against sabotage by secret agents!

Heighten our vigilance, be strictly on guard against sabotage by secret agents! (1955, June)

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