I have generated multiple posts focused on the potential of layering – adding elements of information on top of existing web pages or video authored by others (use the tag layer to view). The most common type of layered elements involves highlights and annotations. My focus has been on the educational potential of layering, but others see the potential in other ways.
Jon Udell suggests that annotation offers a way of contesting fake news. As you might expect, this opportunity has raised concerns and direct commenting on articles labeled as fake news will generate similar reactions. I admit to having less sympathy for news organizations than I might for individuals.
BTW – this Udell link gets a little geeky and explains how annotation works. The post specifically mentions Hypothes.is one of the tools I have described in an educational context.