This is a very important comment, not sure why it's not higher. This isn't really a union in the traditional sense - it's just a group of hyper liberal Google activist employees who are banding together to try to get institutional change.
In societies that are not America, unions are traditionally left of center but most definitely still more or less in the center.
It seems that political discussions relating to the US don't have the appropriate vocabulary to discuss political opinions that are positioned to the left of the corporate wing of the Democratic party.
liberalism is not a far left ideology, it is actually pretty centrist. "Hyper-liberal" is more synonymous to libertarian than it is to what these google activists are.
America has a stunted perception of political ideology. This is pretty apparent when you observe far right pundits and politicians refer to democrats as "far left" when the majority are actually right of center and would be considered conservative in most european countries or even by the democratic party of 20 years ago.