May 15 is not a day for fierce political debates nor exchanging arguments about which side of the whole Israeli-Palestinian issue is right. It is the day of recognition. Acknowledging the darkside of the short Israeli history: all the personal human suffering caused by its establishment in 1948. Denying this fact won't bring Israel any peace nor glory.
Let me just quote what Saeb Erekat wrote in today's Haaretz:
"Today is the anniversary of what we Palestinians refer to as the Nakba, our catastrophe – although a single word cannot begin to explain it, and a single day cannot begin to commemorate it.(...) Israel can't erase Nakba from it's history"