Well, assuming that it always takes more than that to accomplish anything, no matter how long and drawn out the process may be, would be ignorant of history in general.
Never underestimate the power of influence. Take Hitler for example. One person. Barely anyone with any real credentials took him seriously but he directly took over all of Europe and damn near the USSR, even though he made a lot of mistakes. But he spoke well and got the people behind him. Now, not the same aim of course, but imagine the type of influence that's spread more indirectly through media. The kind that kids grow up with generation after generation. That can be the most powerful type.
if jews really do control american media (and that in itself is much open to debate)then they really fuct up dick riding obama for so hard and long.
how has he helped their jewish cause?
he:
-promoted and supporting intsalling muslim extremists in egypt, libya, and eventually syria
-comes across as helpless in regards to iran (can't fault him for that prickly situation)
-scurried our troops outta iraq, paving the way for shia iranian backed insurgents to have their way and probably install a theocracy
-alienated the israeli policitcal class