Socialism is a fundamentally different social system where the world's resources are not controlled by a greedy, undemocratic oligarchy. This is not the same as the capitalist welfare states that have existed in some European countries.

Today, capitalism faces a deep structural crisis.

This is what happens under capitalism - as long as corporations and the super rich own the economy and the politicians, every new generation has to fight hard just to defend itself.

There are limits to reforming a system that is dominated by these massive and rapacious corporations.

There is plenty of work to do, but big business isn't investing in rebuilding a green economy for the 21st century. Instead, they put their money into a gigantic financial casino, and when that led to catastrophe in 2008-9, they made us pay for it.

We have a rotting infrastructure that is literally poisoning children in Flint, Newark and elsewhere.

Bernie Sanders talks about socialism in Scandinavia, and he's correct to point to the huge victories the working class has won there through struggle, such as socialized medicine, free college education, and paid family leave. But if you talk to working people in Sweden or Norway today, you will find out that many of those past gains have been eroded and some virtually eliminated, including massive under-funding of healthcare and other public services and a return to for-profit systems that are unaffordable to working class people.