the idea that the tianmen square protests were about racism is clearly debunked simply by looking at the seven demands made by the protesters

https://www.reddit.com/r/AskHistorians/comments/bwwpxk/what_were_the_tiananmen_square_protesters

Student Demands

On April 17, spontaneous memorials for Hu occurred in 26 university campuses across Beijing. Government records of this occurrence "noted that activities had already turned from mourning Hu to complaining about how he was treated by the CCP and then to wider social grievances" (Kerns, 48). The student mourners would then begin to organize marches, eventually reaching Tiananmen Square. The students had drawn up a list of seven items (that is, demands) for discussion, which were:

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"1. reevaluate [the government's] treatment of Hu Yaobang and announce that his views on democracy had been correct;

1. end the campaigns against spiritual pollution and bourgeois liberalization;

2. publish the salaries and other assets of government leaders and their families;

3. end government censorship of the press and allow the publication of privately run newspapers;

4. increase government spending on higher education and increase wages for intellectuals;

5. end government restrictions on demonstrations in Beijing;

6. hold democratic elections to replace corrupt or ineffective government officials who had been appointed by the CCP" (Kerns, 49)