Those 4th International members murdered include Fauconnet Pasque, Bertram Wolf, Ignace Reiss, Rossini, Leon Sedov,  Rudolf Klement, Stinas, Polloupoulos, Scalalos, Leite, Meqeiros, Freund Isadora Farsner.  Can't say if  stalinists, fascists or dictatorships were responsible.  With regard to Reiss, Klement, Sedov and Wolf, stalinists were the executioners.