If you're a progressive in the US & starting to reach out to neighbors, take a look at "Missing Class" http://www.classism.org/missing-class/about-missing-class/

& to help articulate concerns about Uber, Airbnb, &c. in chats with neighbors, "What's Yours Is Mine" http://www.orbooks.com/catalog/whats-yours-is-mine-by-tom-slee/