In the court documents the woman's side submitted, she explained her reason for filing the lawsuit:
...for years, Twitter has knowingly permitted the terrorist group ISIS to use its social network as a tool for spreading extremist propaganda, raising funds and attracting new recruits. This material support has been instrumental to the rise of ISIS and has enabled it to carry out numerous terrorist attacks.
The documents also claimed that there are now around 70,000 ISIS-related accounts and went into detail about the terrorist group's activities on the platform. Twitter doesn't actively scour for pro-ISIS accounts and posts, but it has been deleting accounts that incite violence. A company spokesperson told the WSJ that "[v]iolent threats and the promotion of terrorism deserve no place on Twitter and, like other social networks, [their] rules make that clear." Due to those deletions, its employees got death threats back in 2015.
The spokesperson also said that while the company sympathizes with the widow, it believes "the lawsuit is without merit." As the publication notes, social media websites are protected by the law. Section 230 of the Communications Decency Act states that services like Twitter, Facebook and YouTube aren't responsible for their users' actions.
[Image credit: David Paul Morris/Bloomberg via Getty Images]