Typically with the aim of shifting power from one group to another.
The world isn't getting worse, we just hear a lot more about what's going on.
People are as selfish and power/money hungry as they've always been. Humans haven't changed, there's just a lot more of us each day.
We're a long way from global peace and economic and environmental harmony but I feel like there are a lot of people who want to try.
More people than ever before and with the Internet providing means of rapid, global communication and coordination those voices are reaching further.
If we can replace capitalism with something sustainable that brings peace and equality to all, perhaps then the world will start to be a better place (but will we ever rid ourselves of the selfishness that means some people want to be more equal than others).