Video: A Brief History of Swearing in American Movies
Movie Munchies showed how the understanding of what is acceptable have changed with time.
Authors of the video blog Movie Munchies posted a 2-minute video A Brief History of Swearing in Movies on YouTube.
From the video you can find out that in late 1920s and early 1930s it was acceptable to use the word ‘fuck’ on screen, but in 1934 a ban on using profanity was introduced and continued for several decades.