Sforno on Genesis 34:31/ספורנו על בראשית ל״ד:ל״א

1?הכזונה, only a harlot does not have anyone standing up in her defense, avenging violence done to her. יעשה, “shall the people who you are afraid of rising up against us be allowed to get away with such conduct? את אחותנו, who was not a harlot. It is incumbent upon us to avenge her disgrace. Once the inhabitants of the region will understand this they will have no reason to attack us.”