Also in the US, when Unions were starting to get going, the "good" ones that stood on principles and tried to do right by their members had their leadership harassed and even murdered by oligarchs and the government. The corruptible ones were allowed to exist, and be corrupted as another means of control, and for the anti-union people to point at as proof that unions "don't work".

Reading up on this has been eye-opening, they didn't teach much about it in school, except maybe a paragraph in the history textbook about the Ludlow Massacre. They don't mention at all the IWW or other leftist unions from the 1910s and 20s. If they mention the Taft–Hartley Act, they don't talk about how it targeted "communist" union leaders, and left "capitalist" unions alone.