What is meant by 'crisis of conscience'? How does it manifest itself in the public domain?

Syllabus link: GS IV – Public Service Ethics: Public/Civil service values and Ethics in Public administration: Status and problems; ethical concerns and dilemmas in government and private institutions; laws, rules, regulations and conscience as sources of ethical guidance; accountability and ethical governance; strengthening of ethical and moral values in governance; ethical issues in international relations and funding; corporate governance.