How do we build a workers world? ?

Proletariat dictatorship and put all the bosses and their bootlickers against the wall. 

you co-opt all the thugs and brutal people you can find for your Black Shirt army ... Lenin knew well that his 'worker's world' could not be installed in power without armies and secret police.  yours won't be any different, except, of course, who is in charge [since Lenin is long dead].

Its already out there. 

the very fact you need to ask this proves that the world needs managers and owners...