Read the transcripts. I promise you they were neither tortured nor was the confession forced. After the prosecutor proved each point, some of them confessed in hopes of manipulating the soviets. Also, I bet you never learned about the derailed trains or the miners who suffocated to death. THe difference is that in capitalist America, the supervisor at the mine gets to be free and run for the Senate. In the USSR, the workers themselves headed the investigation committee and did such a thorough investigation that they found the plot. Then, mostly it was people snitching on others in hopes of leniency, but because the USSR was a worker state, the people were like "F this shit" and they got no leniency.