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examples of breaking fences that have to do with limitation:
1) A shy person becoming bold.
2) A self important reticent person becoming demonstrative.
3) A king displaying himself in public, and perhaps even in public.
4) A scholar expressing his deepest thoughts,
5) A scholar achieving greater clarity and knowing what was until then unclear to him.
6) The righteous showing all their righteousness, or revealing an ugly side of themselves, the evil showing the full extent of their evil, or actually revealing some good.