How Bernie Sanders and Alexandria Ocasio-Cortez primed the Democratic Party for a shutdown fight

In March, six days after Senate Democratic Leader Chuck Schumer and nine of his colleagues voted with Republicans to keep the government open, Vermont Sen. Bernie Sanders and New York Rep. Alexandria Ocasio-Cortez vented their frustrations in Las Vegas before thousands of people.

​ In March, six days after Senate Democratic Leader Chuck Schumer and nine of his colleagues voted with Republicans to keep the government open, Vermont Sen. Bernie Sanders and New York Rep. Alexandria Ocasio-Cortez vented their frustrations in Las Vegas before thousands of people. Read More Breaking News, Latest News and Videos | CNN