I learned from him that it is up to people to do kind acts regardless of what situation they are in or who they are with. He said that enacting revenge only continues the cycle of violence that is present throughout society. He says even if someone intentionally does you wrong, to not retaliate because it helps no one and only further these petty type of dilemmas. He gave advice and insight to anyone that asked for it. He lent an ear to listen to people's problems and helped them recover from whatever they were going through.
I can only offer insight into my own personal situations. Not everything is as it seems. Make sure you know the whole story of a situation before jumping in to rush judgment. It is easy for one to assume and stereotype or even mis-characterize another because it's easy to do. It takes virtually no work to vilify someone, especially if you haven't been in their position before. So rather than rush to anger about trivial events, perhaps it is best to be patient and try to understand the problems that other people are going through so that, if their is something that needs to be discussed or fixed, it can be done so under mutually beneficial circumstances.
I do believe people have some sort of responsibility to others if they have a quality or skill that can be helpful to those around them. However, sometimes other people can be demanding and put a strain on that person that is trying to help. So I understand if skilled people or people with helpful qualities don't accept a community position. But I think there is a point to where sometimes it is just necessary for that person to step in the the betterment of the community. So not everyone needs to contribute but I posit that if everyone did their best to help out someone else, violence in general would be down in all areas.