Otherwise, they will risk bitter reprisals and backlashes by an enraged populace. The time for them to show where they stand is now ... and it must be voluuntary and before the crisis for it to be believed by the people. Unfortunately, once such a backlash begins, however much many of us may try and prevent innocents from being caught up in it ... it will be almost impossible to restrain. This is just a fact of history. People will only be slaughtered for so long before reacting harshly against those they perceive are responsible.
The time to act and show their commitment and dissolve the perception is now IMHO.
This should help us understand the mentality of the Serbs. After a few centuries of Islamic slaughter, they learned to be tougher or die.