Moral dilemmas

I was doing some research and came across this recent article on Israel and Gaza.

It says much of what I have been feeling about the issue, and also about feeling tongue-tied about speaking up about this particular violence. How do religious leaders speak out about violence, even religious violence, and still respect the global religious plurality that is growing?

The author says:
The choice for progressive Christian leaders today is not between guilt-ridden silence and full-throated denunciation of Israeli policy and Israeli aggression. It is certainly not a choice between keeping silent and presuming to lecture Jews on Judaic ethics. Rather, the choice lies between the kind of craven irresponsibility that continued silence represents and a public moral stance that accords well with Obamian aspiration: What kind of country do we want to be?

I think we need to broaden this question beyond our national borders and this particular issue. What kind of humans do we want to be? Supporting through silence, violence of any kind, is a kind of action in and of itself, is it not? Omission can be a sin.