What did labor unions and civil rights groups commonly have During the second Red Scare?

During the second Red Scare, labor unions and civil rights groups commonly faced heightened scrutiny and suspicion due to fears of communist infiltration. Many were subjected to investigations and accusations of being subversive, which led to a crackdown on their activities. This environment fostered a climate of fear, where both groups had to navigate challenges to their legitimacy and fight against repression, often uniting in their struggles for social justice and workers' rights.