The Instant of Now by Irvin E. Cox

Revolution is not necessarily a noble thing. Unless shrewdly directed, its best elements may fall victim to its basest impulses.

Eddie Dirrul had destroyed the message seconds after reading it. Yet, as he left the pneumotube from the University, he felt as if it were burning a hole in his pocket. It had come to him from Paul Sorgel, the new top-agent from the Planet Vinin. It had been written in High Vininese.