When in a meeting given by upper management where They say something along the lines of, “Again, we need to focus more on blah blah blah,” in which they never actually mentioned what we needed to focus on prior to their present statement (therefore negating the need for the use of “again”), the implied admonishment for not having understood the non-existent first admonishment for not doing what we are presently be admonished for… really irks me.

In other words: don’t start a sentence with “again”, until you actually would be repeating yourself… again.