I agree that I am breathing in oxegyn and exhaling carbon dioxide. We have no disagreement on that.
Now, perhaps we can disagree over the reasons that the TEMPERATURE of the oxegyn I breathe in today is different than it was 40 years ago ... I'll consult my scientists, and you consult your scientific studies filtered through the appropriate political commisars to ensure they reflect party doctrine.
I have never been a follower of Karl Marx, and will agree with your eloquent description of him as full of shit. That does not mean that anyone who spouts the correct anti-Marxist rhetoric is not equally full of shit. Nor does it mean that I agree with anyone under the delusion that subscribers to political philosophies to the left of John Birch are Marxist.