The correct answer is A) Nicola Sacco and Bartolomeo Vanzetti.
The two immigrants arrested for their participation in a robbery in which a security guard was killed whose case became a cause célèbre were Nicola Sacco and Bartolomeo Vanzetti.
In a time where persecution of Communists and anarchists was part of the United States, these two Italian immigrants were considered anarchists. They were accused of robbery of a shoe store in Massachusetts where a security guard was killed during the incident. The police arrested both men who, unfortunately for them, were carrying guns. Although there was not enough evidence for a sentence, in August 1927 they were executed, creating so much controversy for this decision in the years to follow.