Yes, I think that art can be a good vehicle for this kind of message. It's something that can help stir the emotions of those who might be inclined to look for the 'truth' out there, and move them to find out more - to read and learn.
Why do people write articles about these matters, or why put up websites with alternative (to mainstream) news? It's not to force upon people ideas that they don't want to think about, but it's here for those who are interested. If they reject the intended message, okay - but if they glean something from the information presented, if it helps them look in the right direction, wonderful!
I had an idea : ) One can take an article that inspires them from the sott website (or other), and then create any kind of art work for it. Then beside it, a write up with a simple explaination, and where to locate the article (or have the url on small pieces of paper that people can bring home). That might be a more straightforward way of helping people find sites like this, which they might not normally discover themselves.
I'm not actually proposing anything, just... thinking out loud. : )