Bernie Sanders, like all "progressives", has no solution to the many economic, social, ecological and political crises that are created by the capitalist economy.
Both Democratic and Republican parties are supporters, by all means including nuclear war, of the now globalized capitalist economic system, offering only reforms, taxation, and criminal attacks against individual capitalists. When Bernie Sanders was asked the reason for the increasingly barbaric economic inequality, he said it was caused by "greed". This is nonsense as greed, one of the 7 "deadly sins", is a personality problem, not a macro-economic crisis.
The working class majority of the U.S., and globally, desperately needs to end globalized capitalism and transition to a globalized socialist economic system that provides all people with an universal minimum standard of living. A socialized enterprise is socially owned (not privately owned) that is democratically controlled and under workers' management.
Note Marxist economist educator Richard D. Wolff http://www.rdwolff.com Economic Update radio program, Democracy at Work worker owned, managed co-operative enterprise.