One slip-up

I feel very bad about what has gone on in the organization I preside over, and even worse that I didn't do what should have been done to prevent it. I am the president of the Residence Hall Association at SFU, a student government within the university's residences, and we put out a newsletter to the undergrad residences every month which we try to fill with events happening in residence and various entertaining items (or entertaining to the person making it). March's newsletter had some content in it which I would not repeat; safe to say that the glance I had of it after it was printed and reprinted on many hundreds of pages should have made me send it to the recycling bin as it in no way reflected what I want the organization to stand for or to be.
Yet I didn't stop it, and this worries me because it tells me that I can't respect my own values and intuition to follow them when a situation comes up where social pressures tell me to act against my values. It may be over-dramatic, but it reminds me of the quote from Edmund Burke, "All that is necessary for evil to succeed is that good men do nothing." For many years, I've tried to be the person who does something in the face of challenged values (of course all the while accepting the assumption, albeit perhaps true, that I am one of those "good men"); and now I have experienced the pain of doing nothing, and to offer some advice, if you feel your values being challenged, do something about it. Whether that is questioning why you value that thing or if it's saying no to the face of a group of people who would have you go against that value, do it. The moment you do nothing, someday it will come back and you will have this feeling in yourself like you have invalidated your own principles...
Well, that's enough self-pity. Please take what advice I have in this case, as the same situation could happen to you, and I pray you would do differently.