The article disposes a role and significance of criticism as a method of contradictions unveiling and shortcomings elimination in the sphere of contemporary public and legal relationship as a way of social creativity stipulating progress. It explains meanings of such definitions as «criticism» and «captiousness» in terms of legal democratic state setting up, identifies aims, tasks and necessity of constructive criticism appropriate on time of governmental and municipal institutions as well as public servants in order to achieve progressive observation and protection of human rights and freedom.