The latest would be Trump assassin, Ryan Wesley Routh, sounds like a man who is mentally unbalanced, like the Unabomber, Ted Kaczynski, who terrorized the nation for almost two decades before his deranged 35,000-word manifesto led to his identification and arrest. A psychiatrist diagnosed Kaczynski as a paranoid schizophrenic. He pleaded guilty to prevent his lawyers from entering an insanity plea. Here's an excerpt from a 2023 NPR article written after Kaczynski died in prison at the age of 81:
