https://www.cnbc.com/2018/04/05/twitter-responds-to-misinformation-after-youtube-shooting.html

Twitter defended its current policies while saying it would invest more in combating misinformation, after fielding criticism for the number of fake accounts and hoaxes that arose during the shooting on YouTube's campus on Tuesday.

Twitter has come under fire for fake news in the past, but the number of bad actors was particularly bad this week. After documenting numerous examples of abuse, Buzzfeed declared it "no longer a helpful place to follow breaking news."