I have been following this story for a few years (getting email updates, signing petitions, sharing etc) and it is important.
https://www.bbc.co.uk/news/articles/c8vd72zrpr1o
The GMB have been fighting against the odds to get Amazon to recognise them and to start proper negotiations over employment conditions. They increased membership at the Coventry distribution centre from a few dozen to almost 1500 over 2 years - with a lot of very vulnerable workers taking brave steps to support the union in the face of management intimidation and goalpost moving.
Sadly - for now - they have just failed to get the result needed. Although in the USA in one of the major centres the union was recognised a few years ago - and ignored by the company. So it is only the first step.
I use Amazon - and feel guilt with every order (I try to use alternative online sources where possible). But Amazon is here to stay, and the way their workforce is treated (and the way the company spins the story with their TV adverts) is a reflection of our values and priorities as a society. Not good at the moment.