Trials help bring divisions into the open to help heal them.  For post-conflict societies to function, the tensions and divisions of the conflict must be brought out into the open and dealt with in order to be fully put to rest. Those most responsible for war crimes must be brought to justice, those involved in the regime but less culpable must have opportunity to make amends and victims must feel that they have been compensated. This allows compromise and the potential for effective governance. The alternative is to allow undiscussed, simmering hatreds and resentments to persist, which undermine growth and create a risk of further conflict.