 Complete the following phrase:  Yun was an LGBT rights activist, and during this time participated in the abolition movement of LGBT and LGBT related media which was regarded as youth Harmful media specified청소년 유해 매체. At the same time, he always attended anti-war and peace rallies in Jongro, Seoul. Slowly, he became the leading representative in anti-war and peace movements as a guest speaker. Additionally, he participated in an opposition campaign in Seoul which aimed to prevent the government from sending troops overseas to participate in the 