Since when did the CIA assassinate white conservative leaders?

They would if they threatened the imperial core's ability to commit their imperialism.

The US Russia and China are all the same thing

What an obnoxious statement lol. Only the US (and its allies) are built from centuries of capitalist colonialism, and are greatly benefiting from ongoing neocolonialism of those same "former" colonies through the IMF and World Bank. They are also the ones waging countless wars across the Middle East and Asia (Iraq, Vietnam, etc), coup'ing Africa's and Latin America's governments (Chile, Congo, etc), keeping them unstable and unable to unite and stand on their own so they have no choice but to rely on those exploitative institutions, and brutally sanctioning and embargo'ing those that do manage to escape their grasp (like Cuba)

China, and even modern capitalist Russia, for all their flaws, are not even comparable to the sheer amount of suffering the US has inflicted, and continues to do so. There's a reason songs like this are common across the developing world. No one outside the imperial core sees China or Russia as anywhere near equivalent to the US, for good reason.