They lynched the soldiers they sent in on June 2nd, who were unarmed. They only escalated to armed force after they murdered those they sent before. I don’t think they should have sent in soldiers to begin with, given that’s very inflammatory even if they’re unarmed, but it doesn’t justify torching unarmed people with molotovs. Need I mention liberal democracies are guilty of the same sorts of crimes(Kent State Massacre, 1985 MOVE Bombings, Ruby Ridge, WACO Siege, ICE murder just a few days ago, all of these just in the US) and regularly arm their police with military armored vehicles and fire on protesters. The US also cracks down on protests much earlier, go to any protest in the US and there’s a good chance the police will deploy tier gas even if the event is non-violent. The Tiananmen Square protests got as big as they did because of how long it took the government to give any response.

Western Liberal democracies also go abroad and wholesale slaughter populations in foreign nations; Vietnam; Afghanistan; Iraq and the death toll in these places far exceeds any metric who try and stamp on Tiananmen Square protests. China, by comparison, does not conduct these foreign massacres. The PRC is guilty of many crimes, I’m very critical of it myself, but it’s crimes fall far short of the United States. This has nothing to do with one or two parties, it has to do with ruling class capitalism vs working class socialism.