Grab that copy of Gramsci's Prison Notebooks off your shelves. Marko's Dad, Quentin, from the New Left Review editorial board of the 70's, wrote the 100 pg. or so introduction.Other NLR figures like Jon and Fred Halliday, Jon of Maoist sympathies and Fred who was Trotskyist, are now anti-Maoist in the former case, fred appears to harbor a lingering adherance to aspects of neo-marxian analysis (check out his recent book on Revolutions or the 2005 vol. on International relations theory and the Middle East) but is essentially a pro-Western socicial democrat now, as seen in his book on 9-11.
Disillusionment with the marxist left as you know can take benign and less than benign forms though. Some ex-marxist-leninists remain left Socialists or left social democrats/Labourites, some like Radosh (started in the Young Communist League with Saul Landau at U. Wisc.-Madison) or Horowitz or Hitchens or Stephen Schwartz (member of the CPUSA's W.E.B. Du Bois Club, in the eighties was a unorthodox Trotskyist) go over to the Dark Side. Hard as it might be able to see from a hard left pov, Radosh for example, by the mid-80's was calling Irving Howe soft on the Sandanistas for being against Contra aid.Ex-Maoist Robert Leiken, who wrote a piece or two for Monthly Review (one of the replies along with Michael Yates to the long resignation latter of Maoist Charles Bettelheim to the China-France Friendship Society), flacked for the Contras on Capitol Hill.The historic divide between Socialism and Social Democracy from Leninist and Stalinist Communism had its echose in the vitriol that flew at the youngsters in SDS (many red-diaper babies like Steve Max, his Dad Alan was a Daily Worker writer, Podhoretz, only a few yrs. after he published Staughton Lynd and radical H. Stuart Hughes vs. the Cold War, in Commentary was raging at SDS founders as the sons and daughters of, "The First Family of American Stalinism.") At the famous confrontation of the League for Industrial Democracy/Socialist Party Old Guard elders with the leadership of SDs in the early 60's, after Port Huron, Manny Geltman yelled at Tom Hayden, and drew up his shirt to show the scars he had gotten from Communist Party thugs in 1934 at a rally held by the Socialist Party to protest the repression of the strong Austrian Socialist Party. Decades later the memory of a brawl between Socialists, Trotskyists, Lovestoneites and Communists in Madison Square Garden, was one element in theearly suspicion of the New Left by the Socialist sector of the Old Left. A decade later after the SDS/LID shout fest, these SPUSA figures are the nucleus of the Social Democrats, USA members or sympathizers like Richard Perle, Paul Wolfowitz and Elliott Abrams that were staffers for Henry Jackson.