The killing of Charlie Kirk has left the US and those who care about it on edge. The arrest of a suspect, Tyler Robinson, has hardly settled the nerves, not when the revelation of any supposed political allegiances could touch off a fresh round of recriminations. The fear is that the country is about to descend into a new era of political violence, becoming a place where differences are settled not with words and argument but by guns and blood. After all, it has plumbed those depths before.
The US was born in violence, fought a civil war less than a century after its founding and in living memory seemed to be on the brink of another one – with a spate of assassinations in the 1960s that took the lives of Martin Luther King, Malcolm X, Medgar Evers and John and Bobby Kennedy. That should provide some consolation, the knowledge that the country has been through this before and survived.