Why the long face?

I've been noticing a large number of pictures in the newswires of mourning Palestinian Arab women, such as these:



I was wondering - how come we'd seen so many relatives of past martyrs happy and handing out sweets, celebrating the entry to paradise of their terrorist kin, and now they are so sad? After all - they are certainly martyrs, they were trying to kill their enemies when they died, and they are certainly screwing lots of virgins right around now. What is different?

Then it hit me...

The suicide bombers that were celebrated in the past managed to kill some Jews while dying. The celebrations aren't for dying - they are for successful murder!