Guy Bartkus, the sole suspect in a fatal car bombing outside a fertility clinic in Palm Springs on May 17, reportedly managed multiple social media accounts showcasing homemade explosives and disturbing messages. Authorities are investigating these accounts, including a YouTube channel called “Indict Evolution,” which featured videos of explosive tests and an interest in radioactive materials, before being removed for violating policies on violent extremism. Bartkus, who is believed to have died in the explosion, was identified as the suspect by the FBI.