The community you walk by is the community you accept
The title paraphrases the words that leaders of organisations use when they want to improve (usually safety) in an organisation. It's an oft used phrase that conveys many points, including accepting responsibility, recognising SEP's, and changing the culture of the company environment.
So when it is applied to the community it means the same thing.
- Accepting that you are responsible fo rthe community you live in
- You need to become a player and not a spectator