The Anarchist theoreticians who after the great test of 193137 continue to repeat the old reactionary nonsense about Kronstadt and who affirm that Stalinism is the inevitable result of Marxism and Bolshevism simply demonstrate by this they are forever dead for the revolution

Can you repeat this sentence, but add in punctuation?
The Anarchist theoreticians, who after the great test of 1931-37 continue to repeat the old reactionary nonsense about Kronstadt, and who affirm that "Stalinism is the inevitable result of Marxism and Bolshevism," simply demonstrate by this they are forever dead for the revolution.