In his Nobel Prize acceptance speech, Wiesel states that silence is not neutral. That, by trying to remain "unbiased" and not picking a side, you are chosing the side of the oppressor.
He believes that not helping is as bad as participating; and that, when it comes to human suffering, everyone should raise their voces to help those in need, regardless of their race and nationality.
A wedding ring is a common symbol of love and commitment. It is a universal symbol of marriage. The other options are also symbolic, just of other things.
