Well TC is 'Totalitarian Collectivism'. It is much more dynamic than the guilt and peer pressure tactic of Political Correctness. TC is based upon the power of the State to control people. Their methods are designed to coerce acceptance and mold behavior. The C is the object of the elite's dream of complete dominion.
Collectivism encompasses all the ism's that seek to enslave man.
Communism, Socialism, Fascism, and the current 'Third Wave', are all part of the same scam that has been used to deceive mankind into willingly giving up their individual rights for the false promises, of a dishonest slave master. The correctness in PC is the secular relativism that justifies accepting an erroneous assemblage of political doctrines. While the collectivism in TC is the absolute aim and ultimate goal for the domination of humanity. PC is bad enough, but TC will secure the shackle and chains of despair and suffering, on the vast hordes of humankind. You are urged to start using this term in your writing and conversations and start explaining the threat that really is before us.