I fixed a run-on sentence, also known as a comma splice, which IS a grammatical error. Somebody reverted it, putting the grammatical error back into the text. This preference for poor English is confounding to me.
This sentence was grammatically incorrect:
"It was not always hostile behavior, sometimes the women were assigned roles to which they were not physically suited."
I made the sentence correct by replacing the comma with a semicolon:
"It was not always hostile behavior; sometimes the women were assigned roles to which they were not physically suited."
Now it has deliberately been made incorrect again.