When I went through my thousands of Flickr photo postings from my time in China to look for translations I can share here, I found this Peking University leaflet signed “A PLA Officer” from 1989 that I came across online.
To the Officers and Soldiers:
You have been told many times that your guns will not be turned against the people. That is something we deeply believe. But have you considered that if you are sent into Beijing that the government also, just like you, will be determined not to oppress the people? Just consider the words of Li Peng several days ago — he said that the students are patriotic but also said that the students are fomenting insurrection. How can you trust someone who talks like that? To put it bluntly, the government is using you to oppress the people. You guns will forced to turn against the people. Therefore you should not go into Beijing. If not you will be remembered as criminals forever.
A PLA officer May 22, 1989
[a Peking University leaflet]