Why does the verb empecer mean to hurt or offend when empecemos means "lets' get started?"

Question

Why does the verb empecer mean to hurt or offend when empecemos means "lets' get started?"

Answer 1

"empecemos" (meaning "let's get started") is from "empezar" (1st pers. plu. present subj.)

Answer 2

Well, so that "empecemos" can be offensive must be in a sentence like this: no empecemos.

It is when you are trying to warn a person you know a lot that he musn't behave like you suspect he is going to do it just now. It is a warning. It is the same as: don't get started again to do that. But, I understand, your confusion because instead of that, this person says: no empecemos. He or she is talking with "we" instead of "you". It is not strange that this cannot be understood.