Frank Giustra, the founder of Lionsgate Entertainment, is objecting to defamatory tweets. He also raises concerns about a tweet that calls for Giustra to be killed with “2 bullets to the back of his head.” The lawsuit states that some of the tweets were removed at Giustra’s request, but many still remain online. Twitter did not respond to a request for comment. (Business in Vancouver)

Talking point: Lawsuits attempting to hold platform companies responsible for what is published on them have been largely unsuccessful in the United States. Similar cases against Google and Facebook haven’t gone anywhere in Canada, either. One thing could make this different: Giustra has the deep pockets needed to fight Twitter. However, this particular court may be less amenable to a broader interpretation around defamation. The case will be heard by the B.C. Supreme Court. In April 2017, the court ruled that it was not appropriate to collectively hold responsible the authors of a National Post series for articles where they did not all share bylines.