Terrorism in the 20th century: a narrative encyclopedia from the anarchists, through the Weathermen, to the Unabomber

Throughout the twentieth century, countless criminal groups have earned infamy by their violent acts of terrorism.

Political assassinations, kidnappings, bombings, lynchings and hijackings have stunned the world.

In recent decades, terrorism has become an increasing threat, especially when it comes to air travel.

Although in this country terrorism is not a new phenomenon, it is one that is growing-and the fear of terrorism is growing faster.