And let’s not forget why we have a separate Labor Day in the US:

>Labor Day has conservative roots. In 1894, President Grover Cleveland pushed Congress to establish the holiday as a way to de-escalate class tension following the Pullman Strike, during which as many as ninety workers were gunned down by thousands of US Marshals serving at the pleasure of railway tycoon George Pullman, one of the time’s most hated industrial barons.

>Cleveland was wary of the response to his actions. He signed Labor Day into law a mere six days after busting the strike.

Source: https://www.jacobinmag.com/2015/09/labor-day-may-first-ameri...

That was thrown right not air dropped? I was mostly using it as a punctuation point about the violence and power imbalance applied to stop any labor movement in the US. But yeah there's a deep deep history of the government coming in to violently break up labor strikes for capital long before and long after 1921.