The sentence "abunda la caca" usually refers to the fact that there are many bad people and situations in the world.
Latin American sayings.
The aforementioned saying is usually related to the fact that in the world there are numerous people, situations and concepts which are bad, and like the "caca" they stink for the people who show them and who have ethics and values that are superior to said actions, for which this saying is often used in a pejorative way.
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