What a great gif! Originally shared by Ole Olson Senate Political Polarization by Year This GIF animates how often US Senators vote together from 1989-2013. Methodology explained here: Senate Voting Relationships http://www.renzolucioni.com/senate-voting-relationships/ Each frame in greater detail http://imgur.com/a/Wmoex/all United States of Amoeba http://www.economist.com/news/united-states/21591190-united-states-amoeba While it is tempting to fall for the "both sides are equally guilty" False Equivalence Logical Fallacy here, remember that it was conservative Republicans that embarked on literally the worst campaign of obstruction in our nation's history starting in 2009 when the organelles really start to separate. More Information Partisan polarization, in Congress and among public, is greater than ever http://www.pewresearch.org/fact-tank/2013/07/17/partisan-polarization-in-congress-and-among-public-is-greater-than-ever/ Polarization in Congress has risen sharply. ...