I was in chat and since I'm at 10k user I saw a spam/offensive flag for a message in
chat.stackexchange.com/transcript/66233/2017/9/27 that was deleted and the user automatically suspended for a short time, before I could handle the flag. The one flagged message I saw, before it was deleted, did not seem to me to violate the "be nice" policy, nor to get particularly close to doing so (though it did express a political opinion that I vehemently disagree with).