Lack of moral witness by academics?

I'd rather live as a member of a community than as someone who just talks about community but doesn't live it. Academics may have some sort of communal life, with their colleagues at their institutions or with fellow congregants at church, but I suspect it is rather limited. If they talk about community and political reform then, on what basis can they be credible witnesses to the way of life they are advocating? Their voting record? Their community activism or advocacy? How do they treat their neighbor? The parable of the good Samaritan applies not only to our treatment of (guest-)strangers we find in our midst (the ancient Greeks knew of hospitality as a duty to the gods) but to those with whom we live or have daily dealings.