Rep. Ilhan Omar spoke to Twitter CEO Jack Dorsey on the phone this week and demanded to know why the social media platform hadn’t deleted a tweet from President Trump that she said incited violence against her. The Twitter boss called Omar on Tuesday to talk about the presidential tweet, which shared a provocative video inter-splicing the Minnesota Democrat’s comments about 9/11 with footage of the Twin Towers in flames, according to The Washington Post. Omar, who said she experienced a surge in death threats in the days after the April 12 tweet, pressed Dorsey to explain why the company...