An anonymous reader writes: An American woman named Tamara Fields has sued Twitter in U.S. federal court, saying the social network gave the Islamic State a voice to spread its propaganda. Fields's husband died on November 9, when the terrorist organization attacked a police training center in Amman, Jordan. The complaint alleges, "Without Twitter, the explosive growth of ISIS over the last few years into the most-feared terrorist group in the world would not have been possible." At the end of 2015, Twitter stepped up its efforts (or at least its official policies) to block such content from its site. But the company has been under fire for over a year from citizens and law enforcement officials over the activity of various terrorist groups on its platform. Fields's attorneys hope that her husband's death will give her proper standing to challenge Twitter in court.