Netflix's DVD Carrie, 1952

On Netflix’s disk of Carrie 1952 there is a blurb out front about “section 16”, “Destitute”, could not play in US theaters ‘‘at the time’’ because of politics. Do you have any idea what they are talking about.

[Quotes are approximate, I cannot pause or slow down the blurb.]

J. Edgar Hoover tried to suppress the film because he thought that the pig’s blood scene was a personal attak as he had “blood on his hands” and always wanted to be Prom Queen. It didn’t help that the dress Sissy Spacek wore was remarkably similar to the one habitually worn by Hoover while entertaining.
But seriously, it was McCarthyism. From Turner Classic Movies