In your opinion, when is censorship a good thing? When it is a bad thing? Cite evidence from this text, your own experience, and other literature, art, or history in your answer.

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the unique function that the video specifically ascribes to sins near tunnels is "prohibiting certain cargo". tunnels have specific control signs such as minimum and maximum speed, the appropriate use of headlight and prohibited cargo. for your own safety it is important you understand the signs when approaching a tunnel.