Since you can't do anything about global totalitarianism, why not just make the best of it?
Why not exploit the situation instead of moaning about it? Do what is expedient - why not?
Why not make a successful career out of leftism - like so many others? Why not surrender your private mind to leftism, in the same way as you have already surrendered your public behaviour? By having any reservations at all, you are making yourself miserable - why not simply cast-aside those reservations?
Just say an inner yes to what you will, anyway, be forced to do (sooner or later)...
Since you necessarily inhabit the thought prison that is leftism – then why not, at least, become one of the ‘trustys’ among the inmates – to assist with the smooth running of the gaol, and get yourself a few privileges?
Why not, indeed, strive to become one of the prison guards? Somebody has to do the job? Maybe you could temper the severity of the regime?
(And herein lies the particular temptation for the intellectual elite – a temptation few resist. That (literally) soul-destroying pragmatism by which (for eminently sensible reasons) we quietly, by gradual degrees, change sides in the spiritual battle of the world: that unseen warfare between The Good and that which opposes The Good.)
Well why not?
There is no earthly reason why not.
In a world of pervasive and powerful PC, there is really only one compelling reason for holding back and resisting in any way, shape or form - which is that embracing leftism will shrink your soul.
If you do not believe in the soul, this reason will carry no force at all: so by your own calculations you are stupid to resist leftism. Or, if you believe the soul is inviolable, and that nothing you think or do can affect the soul: then also, by your own calculations, you are stupid to resist leftism.
If you do not believe in Natural Law (innate knowledge of The Good), and that breaking Natural Law harms the soul: then logically you should learn to love leftism.
If you do not believe in the reality of transcendental good - then you might as well go with the flow, allow yourself to be re-programmed: learn, by regular practice, to re-label lies as truth, ugliness as beauty, evil as virtue; until leftism has entered into your heart and soul, as well as pouring into your ears and out-from your mouth.
But leftism is nihilism; therefore it is not merely political: it is also existential.
To fight against political correctness is therefore ultimately an existential act: a battle to preserve the eternal soul.
But if you do not believe that political correctness will harm your eternal soul: then you would be well-advised to suck it up.
(The above is adapted from the closing passages of my 2011 mini-book Thought Prison.)