Twitter "company rule" #1: Trump tweets = traffic and no other "rules" matter; on a related note, see Why Won’t Twitter Treat White Supremacy Like ISIS? Because It Would Mean Banning Some Republican Politicians Too. | Mother Jones
"Omar pressed Dorsey to explain why Twitter didn’t remove Trump’s tweet outright, according to a person familiar with the conversation who spoke on condition of anonymity because the call was private. Dorsey said that the president’s tweet didn’t violate the company’s rules, a second person from Twitter confirmed.Tech Policy Twitter CEO Jack Dorsey called Rep. Ilhan Omar after Trump’s tweet sparked a flood of death threats | Washington Post
Dorsey also pointed to the fact that the tweet and video already had been viewed and shared far beyond the site, one of the sources said. But the Twitter executive did tell Omar that the tech giant needed to do a better job generally in removing hate and harassment from the site, according to the two people familiar with the call."