While the initial presence of the military failed to quell the protests, the Chinese authorities decided to increase their aggression. At 1 a.m. on June 4, Chinese soldiers and police stormed Tiananmen Square, firing live rounds into the crowd.
Although thousands of protesters simply tried to escape, others fought back, stoning the attacking troops and setting fire to military vehicles. Reporters and Western diplomats there that day estimated that hundreds to thousands of protesters were killed in the Tiananmen Square Massacre, and as many as 10,000 were arrested.
Leaders worldwide, including Gorbachev, condemned the military action and, less than a month later, the United States Congress voted to impose economic sanctions against China, citing human rights violations.