Hours before he opened fire at the Florida State University library, lawyer Myron May left a desperate voicemail for an acquaintance with this plea: I do not want to die in vain." The former prosecutor ... believed government "stalkers" were harassing him and using a "direct[ed] energy weapon" to hurt him. Police have said that May ... showed up to the library with a .380 semiautomatic pistol, shot three people and was then killed by cops when he would not drop the weapon. He believed he was a "targeted individual," the term used by people who think the government and shadowy gangs are attacking them with mind control and invisible, remote weapons. Renee Pittman Mitchell, who ... has a website devoted to those claims, said May reached out to her through Facebook. "He told me he just didn't want to go on living like this," Mitchell said. It is unclear when May's mental distress began. He practiced law in Texas and New Mexico, where he worked as a prosecutor for the Dona Ana district attorney's office until he abruptly quit Oct. 6. He made several posts on a Facebook page for "Targeted Individuals International," including one that asked, "Has anyone here ever been encouraged by your handler to kill with a promise of freedom?" An email he sent Mitchell hours before the library shootings outlined 10 packages he had sent to her and other friends around the country, with photos of certified mail receipts and tracking information. Mitchell said she had not yet received the package, but had been told it contained videos and writing.