In New York, an investigation is being launched into a high ranking police officer's use of pepper spray during protests on Wall Street last Saturday.      The protests began almost two weeks ago, under the name "Occupy Wall Street."   But over the course of all the demonstrations, no clear goal or message has yet to surface from the protests.      Dr. Cornel West, famous professor at Princeton University and a supporter of the "Occupy Wall Street"  movement,"  explains to Brooke what the protests are all about.