Summarize the types of propaganda students distributed during the Tiananmen Square protests and massacre in a bulleted list.

Context: During the 1989 Tiananmen Square protests and massacre student demonstrators created and distributed a large variety of propaganda. The first of these were memorial posters dedicated to Hu Yaobang, which were placed in Peking University following his death on Saturday April 15, 1989. On April 16th and 17th, pamphlets, leaflets and other forms of propaganda began to be distributed by university students both in Peking University and at Tiananmen Square where large congregations of students began to form in what became the beginning stages of the protest. These were used to communicate among the students as well as to spread their messages and demands to groups such as the Chinese government and foreign media. Other forms of propaganda would emerge as the protests continued, such as a hunger strike beginning on May 13 and visits from celebrities and intellectuals, as well as speeches and songs. All of these were used to promote the interests of the student protest movement.

Answer: The following are types of propaganda students distributed during the Tiananmen Square protests and massacre:
- Memorial posters dedicated to Hu Yaobang
- Hunger strike
- Visits from celebrities and intellectuals
- Speeches and songs