In the song, the main reason dylan uses ain't instead of isn't and instead of them is to show that he is not prejudiced does not understand grammar can use dialect is not part of the lower class

Dylan uses ain't instead of isn't and instead of them is to show that he is not prejudiced. Bob When Bob Dylan wrote the song, he put some words to the melody of an old slave song called "No More Auction Block". Dylan took the song to the nightclub Gerde's Folk City in Greenwich Village, where he was about to perform it. Before playing it, he announced, "This here ain't no protest song or anything like that, 'cause I don't write no protest songs".

can yo copy and paste the story? i don't know what to work with if i don't have anything.