Ate at a place where you order at the counter, sit down, they bring your food. Only table available had a couple dirty dishes on it. I sat down, hoping they would come soon to take them. People at the next table casually, without even asking me, started dumping their dirty dishes on my table (for all I know, the dishes already there may have come from them). I said "Excuse me, I don't want you doing that." They stopped, but looked all butthurt about it and mumbled passive aggressively under their breath. Was I overly sensitive making an issue of this?