> Google has been very consistent in showing its bias for an open, connected, free world where quality information is accessible
I guess that's why they've been working with China to create censored sub-internet?
> It was formed by immigrants,
It was formed by Page and Brin, only Brin can be classified as "immigrant" and even him not of his own volition - he was brought in the US by his parents when he was 6.
> Nothing you’ve said points to the fact that they’ve actually silenced “non-left” news.
If by "silenced" you mean completely prevented access, then yes, Google does not have this power. Fortunately, almost nobody does. Biasing the picture, though, is another matter. US politics as it is now is often balancing on results of pretty close elections, and couple of thousands of votes thrown either way can do a lot. Google has access to data about billions, including vast majority of people in the US. People at Google are not shy about proclaiming at which side there are, and some also not shy about declaring they utter lack of respect and tolerance to the other side. Maybe there's a line they still would not cross and that line is way before it could influence any work decisions - but how exactly we can know that and believe that?
> And having worked there twice, the culture I observed is such that they’d never want to do such things
Are you sure that your acknowledged bias did not make you miss the willingness to suppress views that both you and your peers vehemently disagree with and hold despicable?
> It’s antithetical to their world view to silence political viewpoints
It's not what it looks like on the outside, at least. Just throw in "it's ok to be intolerant to those bad outgroup people" and you're in the clear. I don't see any hard commitment to free speech from Google. Maybe the people you've encountered that have this commitment are not actually those who dictate the policies?