Among Rocker's best known writings were "Anarcho-syndicalism" (much lauded by Chomsky).
"The Tragedy of Spain" (on the 1936 Spanish Revolution).
"The London Years" an autobiography.
And his magnum opus on nationalism: "Nationalism and Culture".
I suppose, in fairness to Media Lens, there may be another Rudolf Rocker out there who described himself soley as a political activist. And not an anarchist.
Anyway, here's Rocker the anarchist: