풍자, or satire, is a literary and artistic technique that uses humor, irony, or exaggeration to criticize or mock individuals, institutions, or societal norms. It often aims to provoke thought and encourage change by highlighting flaws or absurdities in a subject. This form of expression can be found in various mediums, including literature, theater, and visual arts. Notable examples of 풍자 include the works of writers like 조지 오웰 and 마크 트웨인, who used satire to address political and social issues in their time.