system
Given the following post, respond as if you're commenting on Reddit:
human
Do we have a moral obligation to tell people the "uglyness" about things?

Here uglyness would be anything that would radically alter someones perspective on something negatively. 

For example: 

Person A knows something. Doesn't matter what, but it is negative and damming to Person C. 

However, Person B who thinks highly of Person C does not know this information. 

Should Person A inform Person B about Person C?
gpt
Moral obligations usually occur under circumstances dependant on harm or similar. In this case you say it is in the context of it altering someone's perspective on something negatively.

I feel people have a right to know the truth, that the bitterest truth is better than the sweetest lie. Nature is a cruel mother f*cker and people ought to know exactly the true nature of all things which encompass it.

This you could say is a moral obligation in itself because if a person is to be "left out of the loop" so to speak, about some truth (pertaining to their character or otherwise) in a negative manner... why then they do not know the truth, and all people deserve to know the truth...

as a syllogism:

A)all people deserve to know the truth

B)not telling someone about the uglyness of something is withholding the truth

Conclusion) We are therefore obligated to express the truth of how things are.

The problem with this however is that ugliness is subjective and it would have to be taken as something of a majority rule. Another potential factor is unnecessary harm of peoples feelings etc through shaming (it has to be done in a sensitive manner).