> I think the OP might have been referring to the seeming disappearance of the anti-war demonstrations once Obama took office.

IME, The regular anti-war protestors continued the same recurring protests at the same locations during Obama's term that they had been carrying out under Bush (the same ones are, in many cases, still carrying them out under Trump.)

Media focus may have changed, but that's about alignment of the facts with pre-conceived media narratives, not the underlying reality.