What was a notable consequence of the Red Scare regarding civil liberties?

The correct answer highlights a significant impact of the Red Scare, which was primarily characterized by heightened fear of communism and radical leftism following World War I. During this period, the U.S. government, influenced by these fears, implemented policies that led to increased censorship, surveillance, and actions against those suspected of radical beliefs.

The government conducted aggressive campaigns to root out alleged communists and anarchists, notably through the actions of Attorney General A. Mitchell Palmer and the Palmer Raids. Many individuals were arrested without sufficient evidence, and deportations occurred without providing the due process typically afforded in legal proceedings. This response to perceived threats resulted in violations of civil liberties as the state prioritized national security concerns over individual rights, leading to a chilling effect on free speech and the rights of dissenters.

In contrast, the other choices do not accurately reflect the realities of the time. There was no notable expansion of rights for immigrants or immediate civil rights advancements for women during the Red Scare, as the prevailing sentiment was one of suspicion against foreigners and radical movements. Additionally, labor unions faced significant repression during this time, as strikes were often linked to fears of communism, weakening their power rather than strengthening it.