"Opposition to globalisation".

What does this even mean? What does globalisation even mean? If you look it up in an online dictionary it seems to mean businesses operating on an international scale. Well of course they do. Transport and communications technology has been advancing ever since the inventions of the wheel and of writing. So the physical size of the units in which people operate increases. Big deal. Corbyn isn't opposed to this. Trump probably isn't opposed to this, he is a business owner after all. People trot out globalisation as the source of their ills when what they really mean is progress that they havn't bothered to keep up with.

"Opposition to mainstream media".

Depends a bit on what you mean by mainstream. To me the Guardian is pretty mainstream and I don't see Corbyn being opposed to that. To me the Mail and Express are sewer rags which I would't sully my arse by wiping it with. But others for some reason see them as mainstream. No idea what Corbyn thinks of them.