Describe the Sacco and Vanzetti Trial?

From Internet:

The 1920's trial and executions of Italian anarchists Nicola Sacco and Bartolomeo Vanzetti trouble and intrigue us decades later. Experts continue to debate whether one or both men committed armed robbery and murder. On one subject, however, there should be no debate. Sacco and Vanzetti did not receive a fair trial. Sacco and Vanzetti were charged with committing robbery and murder at the Slater and Morrill shoe factory in South Braintree. On the afternoon of April 15, 1920, payroll clerk Frederick Parmenter and security guard Alessandro Berardelli were shot to death and robbed of over $15,000 in cash. Eyewitnesses reported that two men committed the crimes and then escaped in a car containing two or three other men. Sacco and Vanzetti were arrested several weeks later on a trolley car. Both were armed, and Sacco possessed a flyer announcing that Vanzetti would speak at an upcoming anarchist rally. No other arrests were ever made; none of the stolen money was ever linked to them or recovered.

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