There's a significant difference between storytelling context and a completely a completely contextless element pushing a negative message. If a movie for example had a man being abused by his wife (or the other way around) that would be fine. If, without context or reason, dialogue at the bottom of the screen flashed the message, "There is nothing wrong with murdering men/women" that would not be fine. It's the difference between a storytelling element and subliminal messaging.