Democracy actually requires that the whole public be able to see common problems and address them and step outside of their own sort of narrow self-interest to do so.
Facebook was looking at which links I clicked on, and it was noticing that I was clicking more on my liberal friends' links than on my conservative friends' links. And without consulting me about it, it had edited them out. They disappeared.
Your filter bubble is your own personal, unique universe of information that you live in online. What's in your filter bubble depends on who you are, and it depends on what you do. But you don't decide what gets in - and more importantly, you don't see what gets edited out.
We really need the Internet to be that thing that we all dreamed of it being. We need it to connect us all together. We need it to introduce us to new ideas and new people and different perspectives. And it's not going to do that if it leaves us all isolated in a Web of one.
There's the idea that people should be able to control how the information that they're giving to websites is used and monetized in a more clear and powerful way. That's something that probably will need government action.