Some tricks only work well -- once. The flags, the symbolism, the lights, the chanting, the timing -- way too many people are now "in the know" about such stuff. Anyone trying this obvious stuff will get commented on (blogs, boards like this one, webzines, etc.) and word will get around.
No -- things are more subtle today. Look for the shaping of worldview to be subtly introduced into video games, movies, music videos, song lyrics, and commercials. The last place will be the overt displays on "news" shows or political events.