On the morning of May 17, 2025, Guy Edward Bartkus loaded his vehicle with explosives and drove from Twentynine Palms to Palm Springs, California, where he detonated a car bomb outside the American Reproductive Centers fertility clinic. The 25-year-old died in the blast and injured four bystanders. He'd been trying to livestream the attack.

One month before the bombing, Bartkus’s closest friend, Sophie Tinney, died in Fox Island, Washington, after allegedly convincing her boyfriend, Lars Eugene Nelson, to shoot her in the head while she slept.

“I’ve never related to someone so much, and can’t imagine I ever would again,” Bartkus wrote of Tinney in his virtual suicide note and manifesto, hosted on promortalism.com. He added, “IIRC we had agreed that if one of us died, the other would probably soon follow.”