Former Bernie Sanders operative warns radical left has 'overtaken' the Democratic Party from within

A former Bernie Sanders operative warned the Democratic Party has been overtaken by its far-left flank through radicalized donors and staffers.

Some Democrats said the outcome showed that the moderate wing of the party carried more electoral weight, while Ms. Hong’s strong showing gave some progressives hope.

Tad Devine, the chief strategist for Bernie Sanders' 2016 presidential campaign, argues in his new book that members of the Democratic Party's establishment conspired to prevent Sanders from capturing the nomination. The book is called "How the Democrats Screwed Bernie." Devine joined "The Takeout" to discuss.