Virtually all large corporations have government and public relations shops. How they are organized and what they are called will vary. Sponsoring high visibility events is a common strategy. It is done for branding, for networking opportunities, sometimes to buy goodwill, and sometimes to be at least symbolically evenhanded if they’ve already engaged on the other side. Agreeing with the sponsored group is not a requirement, though violent and irreconcilable disagreement would probably bar participation. Here it sounds like Google wanted to make a gesture of goodwill indicating an openness to discussion, while some radical employees want to play scorched earth politics. Google really does need to fire some of its unhinged people. There are probably sane people in Google who understand this. Their situation is a lot like faithful priests and lay leaders wondering what to do about the Catholic hierarchy.
I think that's a good analogy.
The irony of these Breitbart "leaks" of internal Google discussions is that Google comes off looking pretty good.
Sure, some engineer will vent against the right but inevitably management steers things back on track and they end up doing the right thing.