"The party told you to reject the evidence of your eyes and ears. It was their final, most essential command. His heart sank as he thought of the enormous power arrayed against him, the ease with which any Party intellectual would overthrow him in debate, the subtle arguments which he would not be able to understand, much less answer. And yet he was in the right! They were wrong and he was right."

George Orwell

We've been brainwashed to believe anger is bad but this is false, what you feel is a righteous anger against those who consider you their enemies but are afraid to tell you openly.