Brownshirts in Portland
Armed men, acting on the President's orders but with their agency and identity disguised, abduct peaceful protesters from the streets, break their bones - in one case, skull - throw them into unmarked vehicles, detain them on government property without actually arresting them and later mysteriously release them again. Apparently most of the troublemakers were not Jews. Just "anarchists" this time. Plus the Navy veteran who had gone down to remind the Federal agents of their oath under the Constitution; he was the one who got his hand smashed so badly that it will need reconstructive surgery.
I've quoted it before and I'll quote it again:
“At first, the countless violations of the law by our new rulers still caused a degree of disquiet. But among the incomprehensible features of those months, my father later recalled, was the fact that soon life went on as if such crimes were the most natural thing in the world.”
That's Joachim Fest in his memoir Not I, writing about Germany circa 1930.