I think it's inaccurate to claim that there are people who aren't enamored with unions simply because people don't like unions.

Take police unions for example. It is well documented that many unions are fervently against policies such as always-on body cams that theoretically should protect a (good) cop and the citizen. Fail that, they are against releasing body cam footage.[0] Police unions are also known to protect abusive officers. [1]

I'm not trying to claim that there isn't an anti-union attitude, but it is not simply associating them with communism.

[0]https://www.nytimes.com/2018/01/09/nyregion/new-york-police-... [1] https://www.theatlantic.com/politics/archive/2014/12/how-pol...