Please. They sent a warning. They allowed people to flee both before and during the combat. 85% of the populace survived the attack. The evidence against a "massacre" is strong.
I'm not questioning that Irgun and Lehi didn't commit terrorist attacks. They clearly did. Nor do I reject the idea that they were quite willing to kill people in order to further their cause. But I reject the idea that they intended, generally, to kill the populace of the village of Deir Yassin in this particular event. (Thus, a "massacre").
And I reject the idea that commemorating the event does anything other than to bury the nuances of the event and the times during which the event occurred and mythologize the event in order to sell a narrative which serves a current purpose -- to infect (as Rocco so articulately put it) the next generations with the idea that Israel (the Jewish people) have no respect for Arab lives. Rather than framing it as one of many battles during the war, in which people, including innocents, tragically, lost their lives.
This, to me, indicates that it was a combat rather than a massacre. Why does it not suggest so to you?