There is a great deal of history where, yes, physical force & violence was used to break strikes. [0] <-- Just one example. [1] <-- another. [2][3] <-- more. The union labor movement is not at its most popular right now either. There'd be a lot more people rooting for the government right now.
[0] https://en.wikipedia.org/wiki/Homestead_strike#The_strike's_...
[1] https://www.britannica.com/event/Pullman-Strike
[2] https://en.wikipedia.org/wiki/Great_Railroad_Strike_of_1877
[3] https://en.wikipedia.org/wiki/Haymarket_affair