Try as they may, every year, a handful of marketers just can't avoid rolling out completely terrible ad campaigns--and 2017 was no exception. According to Business Insider, one such howler was an awful message tweeted out by Adidas, saying "Congratulations, you survived the Boston Marathon!" Erm, didn't anyone in marketing say "too soon?" McDonald's and Leo Burnett U.K. ran an ad which was slammed for exploiting child bereavement.