Kellogg mentions Mark Twain's "A Connecticut Yankee in King Arthur's Court". This story is about a man's trip back in time and his bestowing of future knowledge and technology on a more primitive people. This, of course, is what the Liber8 gang is doing.
About 8:26 in, our two main characters are having a chin-wag in a back alley. In a window nearby can be seen a man filming the crew with a phone.