The Tea Party was a creation of Fox News: in fact, the original name of the movement was "FNC Tax Day Tea Parties." The Tea Party essentially did not exist before FN became involved.
The point of the Tea Party is to focus the - legitimate - anger of the white working class, which has been hammered incessantly over the past thirty years, into getting out the vote for business-conservative Republicans. This is why more literal Tea Partiers such as Ron Paul, who enjoys great support among the Republican electorate, will not be elected president: they don't understand that when the greed and ineptitude of the bankers inevitably lead the global economy to a structural collapse, they have to sprint to the US Treasury with one hand out and the other clutching their copies of Atlas Shrugged and The Road to Serfdom. The brazenness of this move brought the normal operations of the so-called "free market" to the surface and it became intolerable for almost everyone. Bush was terrible for the Republican Party, so it was critical to invent a new narrative blaming Obama, communists, African-Americans, the poor, teachers, Muslims, unionists, and pensioners for the very real problems facing our country and created by the undemocratic alliance of the Democratic and Republican Parties with neoliberal business interests.
The Occupy Wall Street movement does not have the same origins, although it may yet be co-opted by powerful interests within the Democratic Party. OWS is very threatening to the criminals who own our country, so it is important that the movement be seized by more business-friendly interests who support the status quo and can give populist speeches in times of crisis while working behind closed doors to enshrine the same corrupt system, e.g., Obama or someone like him.