The attempted assassination of Donald Trump, which injured the former president at a rally for his re-election campaign and killed a spectator, marks a shocking and frightening moment. Political violence is neither a new development nor an aberration for the US. Though thankfully Mr Trump survived, four American presidents have been murdered, along with candidates and holders of lower offices. Many more have faced serious threats to their lives.
Sometimes such attempts are the work of an individual, such as John Hinckley Jr, who shot and injured Ronald Reagan while mentally ill, or of a small group bent on a particular aim. Sometimes, as with Abraham Lincoln’s murder, they speak to the roiling currents within American politics.
