How we know what we know.

Partly in regards to true motivations. 

The social justice warriors who amass wealth.  http://nypost.com/2016/02/24/de-blasio-administration-mixing-a-toxic-brew-of-class-and-racial-warfare/  What do they really believe?  Do they say what they say about helping the poor to get power and wealth?

Following the discovery of a 2007 warning by Sen. Chuck Schumer against any nominations by President George W. Bush, and efforts to filibuster the Samuel Alito nomination by then-Sens. Obama, Hillary Clinton and Harry Reid in 2006, the Biden video convicts the entire Dem leadership of rank hypocrisy.  That video is on this page.  http://nypost.com/2016/02/24/de-blasio-administration-mixing-a-toxic-brew-of-class-and-racial-warfare/