San Diego attackers' hate manifesto targeted many groups, sought 'destruction of political system,' sources say

Key Points:

• The gunmen who killed three people at the San Diego Islamic Center left behind a 75-page manifesto titled “The New Crusade: Sons of Tarrant,” which promoted hate, anti-Islam, antisemitism, and violence, referencing previous mass killers including Brenton Tarrant.
• The suspects, identified as Cain Lee Clark, 17, and Caleb Laim Vazquez, 18, espoused extremist ideologies including white supremacy, eco-fascism, and advocated for societal collapse and race war, drawing on the "great replacement" theory.
• Authorities found over 30 firearms, tactical gear, and electronic devices during searches, and are investigating a livestream of the attack and the suspects' online radicalization, noting their use of Nazi symbols and hate speech.
• The attack, classified as a likely hate crime, occurred Monday morning around 11:30 a.m., with one suspect’s mother alerting police earlier about missing guns and a suicide note before the shooting began.
• Experts warn the attack reflects a contagion of extremist youth inspired by previous mass shootings, continuing a cycle of manifestos and violence fueled by online radicalization and extremist propaganda.