Why don't you let people decide if they want to do that for themselves? What do all the people trying to convince everyone to forgive and buy a giant company's products get out of it??
I think generally we are better off not pressuring other people to agree with us on everything, even issues like this one. I have strong views on WOTC at the moment but I very much believe people should be able to make up their own minds on these issues. I think that is important for most issues in the hobby: people want to be able to think for themselves