I just declined a peer review request with the following message.
I will never review for Elsevier.
You should not edit for Elsevier.
The fact that you are willing to donate your labor to a corporation as fantastically evil as Elsevier calls into question your personal morality.
The good news is that you can just stop.
I really do try to maintain a genial disposition, and I honestly am not fond of making judgments from afar. But, come on, there are lines we should not cross. The people who saw nothing wrong with cluster bombs should not be controlling and profiting from the flow of scientific information.