It is a bad idea to tie humanist policies to the words communism or marxism.
It is pretty clear that the system we have now leads to problems that cannot be easily patched out and that we need some fundamental rethinking that goes against some of the core beliefs of capitalism.
However, the answers are probably modern solutions, not just reading old texts.
The modern socialist movement has far more to offer than Marx and the UDSSR. But it gets bogged down by definition wars.
The northern model is a good example.
Talk to people about the norther model and they will tell you 'oh yes the northern model is fine, but this is not socialism but capitalism'.
Fair enough. When you try introducing the policies this model is built in in america, you still get accused of being an insane socialist.
What we need is a progressivist, humanist change of paradigms. Rethink our current system under the lense of what the perils of our modern society are and how to solve it without any system being sacred.
The problem here is that oftentimes, we have trouble understanding that we might need fundamental change and some incremental and limited change inside capitalism is not going to solve a problem.
For example, people just go 'well there will always be crime' in a self defeatist way. They do not dare to think about more modern solutions than just locking people up. When you shun out a lot of possible solutions just because they are hard to achieve, then you will never get anywhere.