Ah Buffy, I so wish we were at a pub right now and could have a tedious academic fascinating discussion about the constructivist implications 
That's a very good point, about trivialisation. Like I said, I don't really have an answer.
I do think Martin Luther King thought about how white people would respond to what he said -- not that that determined what he said, but I think for example he was savvy enough to know that nonviolence and civil disobedience would garner more support than violence. You can see that as letting white people control things (as other black activists said) or as being strategic. I can see both arguments (did I mention I'm an academic?)
An example from my own work... being a bit vague... I guess I would say that there are times when you could tell people that their way of doing things amounts to war crimes, but you know that if you say that then they will completely disengage from the discussions you are having, through which you hope to have even a tiny influence on actually reducing war crimes. So you use slightly less incendiary language. It's not ideal, but a "less bad" option. If people stay engaged, you still have hope; if they disengage, you have no hope.
What is the actual goal? Is it getting men to recognise oppression, or getting them to be less oppressive?
Can you end oppression without the oppressors admitting they're wrong? I think perhaps you can, looking at history.