How can we build a better a world? ?

I want to live in a world that is free of all capitalist wickedness, as this brings such misery to us all. It is a rotten system that ensures the suffering of the many for the wealth of the very few. It is the root of all suffering, and is the cause of several social problems, but not limited to: inequality, racism and exploitation. 

I want to live in a world where there is no more suffering. I want to end class conflict, racism and inequality. I want a clean world powered by renewable energy. A world where there is no longer poverty, nor super rich, but everyone lives a decent middle-income level lifestyle. A world where workers ruled and there were government-led workers councils in every state, in addition to unions. A world where all workers are happy with their work and are no longer constrained to the demands of endless profit. A world free of oppression or exploitation of any kind. A world without jails or prisons, but places to rehabilitate people. A world without slaughterhouses or places of non-human suffering as well. A world without owners, or where ownership was collective in pursuit of the common good and best outcome for society. 

How can we, collectively, as a society move forward to fulfill this world and meet these objectives?