Ferdinando Sacco and Bartolomeo Vanzetti were Italian immigrants and anarchists who were convicted of murder in Massachusetts in 1921. With little solid evidence, they were arrested for an armed robbery where a guard and paymaster were killed. Eyewitnesses were uncertain and the only hard evidence was that Sacco's gun was similar to the one used in the crime. Their conviction caused widespread unrest as many believed it was an unjust verdict due to the anti-radical political climate of the time. After their conviction, both Sacco and Vanzetti were sentenced to death.