The advertising boycott of Facebook that took place in the summer of 2020, joined by at least 1,000 brands, forced the social media platform to reflect on its operations and take steps to thwart hate speech and misinformation, said global advertising chief Carolyn Everson during the Association of National Advertisers' Masters of Marketing conference. She called the summer the most challenging time of her career, and noted, "It forced us to take all the work we were doing for the past several years, get it in an organized fashion and add some accountability."