The Sasco Vanzetti case highlighted the growing sense of fear and anxiety over rising immigration in American society in the 1920s. Sacco and Vanzetti were Italian immigrants and anarchists who were accused and ultimately convicted of murder, amidst widespread anti-immigrant sentiment. The case became highly controversial and polarizing, with many arguing that their trial was unfair and that they were being targeted solely because of their immigrant status and political beliefs. The case highlighted the tensions and discrimination faced by immigrants during this time period.