To label is not just to arrange and categorize — it is also to divide and separate. Every label also implies its opposite. If you are X, then you are not Not-X. Thus, if you do not accept the precepts of New Leftism, you are also labelled — despite the fact that you do not wish or consent to be.
You just can’t help it, can you? Your use of labels like “New Leftism” is a classic illustration of what you’re talking about….
I propose a new ism — “Labelism”. You’d probably be one of the poster children for it.
(Not that I necessarily disagree — or even agree — with the rest of your studied rant).