Tensions erupted into violence and mayhem as Police moved in to break up protestors of the North Dakota Energy Transfer Partners pipeline? WatchMojo presents 5 Facts that you need to know about the police action and the ongoing protests. But what does this mean for the protestors? What have high profile celebrities like Mark Ruffalo and Shailene Woodley done for the issue? What kind of threats does the pipeline really pose? How does this compare to other police actions in america? Watch to find out!

Delays, political debate and a Presidential veto have helped make this a hot-button political issue. Welcome to http://www.WatchMojo.com and today we count down 10 crucial facts you should know about the keystone pipeline.

Everyone has seen the celebrity mugshots from the likes of Lindsay Lohan, Matthew McConaughey and Robert Downey, Jr. But did you know that more seemingly “innocent” celebrities like Shailene Woodley, Bill Gates, Reese Witherspoon, Hugh Grant, Hailey Joel Osment, Keanu Reeves and Jane Fonda have also been arrested and taken part in the timeless ritual of the mughsot? Hell, even Tim Allen aka Tim “The Tool Man” Taylor was arrested back in the day, and you won’t believe what he was arrested for!

Author William Marsden tells http://www.WatchMojo.com about his book 'Fools Rule: Inside the Failed Politics of Climate Change,' and discusses how climate change action fundamentally challenges the right-wing ideal of every man for himself.