The FBI has posted a heavily redacted report of its threat investigations during the Gamergate controversy in 2014 and 2015. The 173-page document (not counting 61 deleted pages) primarily seems to cover harassment of critic Anita Sarkeesian and game developer Brianna Wu, including a shooting threat that caused Sarkeesian to cancel a planned talk at Utah State University. Ultimately, the investigations petered out: the FBI wasn’t able to identify the people behind some of the threats, apparently declined to prosecute others, and appears to have struggled with jurisdictional issues.
Source: The FBI has released its Gamergate investigation records – The Verge