The chief of Twitter’s trust and safety division, Ella Irwin, left the company that same day, after a tenure leading its efforts around content moderation. A second executive, A.J. Brown, whose job was to reassure advertisers that Twitter was a safe place for their brands, also decided to quit, The Wall Street Journal reported. A third person, a program manager who worked on brand safety, said on her Twitter profile that she was now “ex-Twitter.”