Historical controversies surrounding a brand can significantly impact modern brand perceptions and accountability. When consumers become aware of a company's problematic past, such as involvement in unethical practices or collaborations with oppressive regimes, it can tarnish the brand's reputation and erode consumer trust. This leads to increased scrutiny of the brand's current actions and demands for greater transparency and accountability. Companies must address historical controversies openly, take responsibility for past wrongdoings, implement changes to prevent similar incidents from occurring in the future, and actively work towards rebuilding trust with consumers.