I'm being purposefully hyperbolic to people that think investing in local communities is a genocide. Realistically yes, you can have leftist beliefs while believing anti left fascist propaganda. A whole lot of why the Weimar Republic fell was socialists believing fascists over their own comrades. But really if the only actual sources for a thing are people paid to explicitly be against communism, maybe don't believe it. Read some Chinese history, look into the myths like mao ordering sparrows to be killed and read why that's not a thing that happened and where those stories first started.

You will never have a clear view of anything regarding people, were too chaotic of a thing to objectively record, but you can get a much better idea if you understand the underlying motivations of those doing the recording. Chinese propaganda wants to entrench Chinese power for a China controlled by the people. American propaganda wants to entrench the ruling classes power for a China controlled by the American ruling class. Seems the biases are therefore a little uneven.