From the emergence of Wikileaks to the rise of the Tea Party, 2010 has been a year in which the centers of power were called into question; and many took to YouTube to share their stories and opinions with the world.

The top News and Politics videos of the year address hot-button issues like the controversial Arizona immigration legislation and the proposed mosque at Ground Zero; the list also covers some of the year’s most shocking events, such as the deaths of the luger at the Vancouver Olympics and the orca trainer at Sea World. Videos about airport security, Justin Bieber, and a congressman caught on camera all made the list, too.

Honorable Mentions: though these videos didn't make the top 10, an eyewitness video shot in the aftermath of the Haiti earthquake in January garnered millions of views, as did an explainer of how the BP oil spill occurred and Dale Peterson's impassioned political ad, the most-watched campaign commercial of the 2010 election season.

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• Check out the rest of our 2010 lists for the top 10s in:

Sports	News	Trailers	Parody	Non-profit
Tech Culture	Hip-hop	Vehicles	Animals	Most Discussed
Short Films	People	International music	Holidays

Olivia Ma, YouTube News Manager