We discover that all human beings are just like us, so we are able to relate to them more easily. That generates a spirit of friendship in which there is less need to hide what we feel or what we are doing.
My activism really is for myself, because I see places in the world where I feel I should be. If there is something really bad, really evil, happening somewhere, then that is where I should be. I need, for myself, to feel that I have stood there. It feels a lot better than just watching it on television.
But like all power, there are those who want to keep it for themselves. The world's entire scientific and cultural heritage, published over centuries in books and journals, is increasingly being digitized and locked up by a handful of private corporations. Want to read the papers featuring the most famous results of the sciences? You'll need to send enormous amounts to publishers like Reed Elsevier.