> modern left wing goals like unlimited mass immigration.

Ahh and there we are. It's the immigrant's fault. Once all those illegals are out the of the country we'll be great again - the world will once more bend to Queen Victoria's will and Bobby Charleston will again lift the world cup for England, it's rightful owners (hard /s btw).

No major party on either side of the Atlantic are pro-illegal immigration or advocating unlimited mass immigration (or anything close to unlimited).

I didn't pass any judgement on that policy, nor blame immigrants for anything. I only observed that it's a deeply unpopular policy across the political spectrum yet they won't abandon it because it's seen as non-negotiable by a small class of very left wing people.

Labour following their desires instead of trying to boost their polling numbers isn't "centrism" by any definition.