At least according to John McCain.
Although technically I don't remember if he ever called us "Low-life scum", but we were lower than whale shit, which is at the bottom of the ocean.
Me being scum
This guy too.
"I don't think,the whole of Southeast Asia, as related to the present and future safety and freedom of the people of this country, is worth the life or limb of a single American [and] I believe that if we had and would keep our dirty, bloody, dollar-soaked fingers out of the business of these [Third World] nations so full of depressed, exploited people, they will arrive at a solution of their own.... And if unfortunately their revolution must be of the violent type because the "haves" refuse to share with the "have-nots" by any peaceful method, at least what they get will be their own, and not the American style, which they don't want and above all don't want crammed down their throats by Americans."
General David M. Shoup, former US Marine Commandant and recipient of the Medal of Honor after Tarawa, 1966
Served under General Smedley Butler in China