Pritilata fought not only against the British rule but also against the gender discrimination because being a woman she received combat training and was assigned to lead a team. She did her assignment successfully. And to save her team and avoid arrest, she sacrificed her life committing suicide. It depicts her dual role.
The sign is a notorious one because the British did not allow Indian people in the club. They compared Indian people to dogs. To them Indian people are not better than the dogs.