The Copycat Effect: How Online Extremism Inspires Violence in America The San Diego mosque shooting, where two teenage shooters killed three men before taking their own lives, is the latest example of a disturbing trend: hate motivated violence inspired by online extremist networks.
What's striking about this case – and many others like it – is not just the scale of the carnage, but the eerie similarity between these crimes.
The shooters' 75 page manifesto detailed their extremist views, which included hatred for Muslim and Jewish people, Black people, the LGBTQ+ community, women, and both major political parties.