Tom Stoppard remembers the summer of 1968.

This indeed was one of the things I loved about England. The English version of continental eruptions suggested a national character in control of itself. In France, Germany, Italy and Spain, political activism at its extremes included murder, kidnap and bombs. My Italian publisher, one of the most sophisticated, charming and charismatic people I’d ever met, was later killed by his own explosives while trying to blow up an electricity pylon outside Milan.