In this passage from Wuthering Heights, Hindley is a young boy who is upset that his parents have allowed another boy, Heathcliff, to live with them. Before Heathcliff arrived, Hindley got all of his parents' attention.
"So, from the very beginning, he bred bad feeling in the house; and at Mrs. Earnshaw's death, which happened in less than two years after, the young master had learned to regard his father as an oppressor rather than a friend, and Heathcliff as a usurper of his parent's affections and his privileges; and he grew bitter with brooding over these injuries."
Does the word "oppressor" have a positive or negative connotation?