Can you explain De Beauvoir's claims that some form of violence against others is inevitable and that under certain conditions violence can be morally justified?

De Beauvoir argues that in some situations, violence may be inevitable as a response to oppressive structures that perpetuate inequality. She suggests that violence can be morally justified when used as a means to resist and challenge systems of oppression that deny individuals their freedom and agency. However, she does not condone violence that is used for purely destructive or oppressive purposes.