Contact Mars Corp and tell them that you will boycott their company until they pull all advertising from David Letterman’s show:
http://www.mars.com/global/Contact+Us/Contact+us.htm
Mine;
If you continue to run ads on the Letterman show, I will NEVER buy another of your products for myself or my company.
I told Mars that I love their Snickers bars and M%M’s. But think that their company should not support a man who jokes about pedophilia.
Done,thanks