BEIJING — One by one, China’s shaken leaders spoke up, denouncing the student protesters who had occupied Tiananmen Square until the army rolled in. They heaped scorn on Zhao Ziyang, the Communist Party leader purged for being soft on the demonstrators, and blamed the upheaval on subversives backed by the United States.

This scene was played out among Chinese Communist Party leaders soon after troops and tanks crushed pro-democracy protests on June 3-4, 1989, according to a collection of previously secret party speeches and statements published Friday in Hong Kong.

“Kill those who should be killed, sentence those who should be sentenced,” Wang Zhen, a veteran Communist with a famously fiery temper, said of the party’s opponents, according to the collection, “The Last Secret: The Final Documents From the June Fourth Crackdown.”

The newly published documents lay bare how after the massacre, party leaders quickly set about reinforcing a worldview that casts the party and China as menaced by malign and secretive forces. It is an outlook that continues to shape Chinese politics under Xi Jinping, the party leader facing off with President Trump in a trade war.