I remember that.
The construction guys were joined by some letter carriers and even some office workers and they soundly beat the anti-American rioters who wouldn’t disburse. A few construction guys got arrested but when Pete Brennan told the city he was going to shut down every construction job in the city and the Longshoremen were going to shut down the docs if the construction workers weren’t released, the city turned them lose within an hour of his call.
A few days later the unions held a pro-Amarica parade and were showered with ticker tape from the offices.