YouTube headquarters shooting

On April 3, 2018, at approximately 12:46 p.m. PDT, a shooting occurred at the headquarters of the video-sharing website YouTube in San Bruno, California. The shooter was identified as 38-year-old Nasim Najafi Aghdam, who entered through an exterior parking garage, approached an outdoor patio, and opened fire with a Smith & Wesson 9 mm semi-automatic pistol. Aghdam wounded three people, one of them critically, before killing herself.

Nasim Aghdam purchased and registered a 9 mm Smith & Wesson semi-automatic pistol from The Gun Range San Diego, a gun dealer, on January 16, 2018. On March 31, 2018, Aghdam's family reported to the police that Nasim Aghdam was missing. According to her father, she "hated" YouTube, and the family was worried she might be traveling to the company's offices.

The perpetrator was identified by police as Nasim Najafi Aghdam (Persian: نسيم نجفى اقدم; 5 April 1979 – 3 April 2018), a vegan activist and fitness personality of Iranian-Azerbaijani heritage. She was born in Urmia, Iran, her parents immigrated to Iran from the Republic of Azerbaijan. She immigrated to the United States with her family in 1996. She was a registered member of the Baháʼí Faith and described how veganism was aligned with her religion, and was critical of Muslims and Baháʼís who ate animals. She lived with her grandmother in Riverside County, California. She posted content on Facebook, Instagram, Telegram and YouTube in Persian, Azerbaijani, English and Turkish. Her content went viral on Iranian social media and drew widespread attention. She had previously protested with People for the Ethical Treatment of Animals (PETA) against the use of pigs in United States Marine Corps training procedures for victims of trauma.