What harmed unions i n the 1920s?

In the 1920s, unions faced significant challenges that hindered their growth and influence. The post-World War I economic boom led to a rise in anti-union sentiment, as many employers resisted unionization efforts and promoted open shop policies. Additionally, the Red Scare fueled fears of communism, causing public perception to turn against unions, which were often associated with radicalism. Furthermore, legal and governmental actions favored business interests, further weakening union power during this period.