Criticism of the FBI’s killing of a Utah man who had made death threats against President Joe Biden on social media quickly made its way through far-right circles with some calling it an “assassination.” But law enforcement and legal experts say based on the information available the FBI’s actions were likely appropriate and justified given the man’s access to guns and the violent specificity of his threats, which went well beyond the bounds of free speech protections.“The First Amendment only goes so far. Not all speech is protected, and he crossed a line,” said Karl Schmae, a retired FBI supervisor...