Sanders said that income inequality is a "moral issue"

AP

Portland, Maine (AP) - The income inequality as "the great moral issue of our time," the Democratic candidate for president Bernie Sanders called for a noisy crowd of thousands in Maine contribute on Monday to the growing by restoring America middle class.

In a major speech in front of more than 7500 in Portland, Sanders stressed the need to raise the minimum wage to $ 15 an hour, give the reform of the criminal justice system and paid for at least two weeks of vacation for workers.