Agreed
1960 Nikita Khruschevh - United Nations - We will defeat you from inside. (not the exact quote, but generally accepted as such)
1964 War on Poverty - Lyndon Johnson
1966 Times Magazine “Is God Dead”
1973 Roe v Wade
etc, etc, etc . . .
Its roots came in 1932 FDR New Deal?? arguably
Actually the republic was lost when one “honest” Abe Lincoln was allowed to walk all over the Constitution during the first 6 months of his first administration in order to prosecute his war of subjugation.
That opened the door through which every progressive since has walked.