The phrase "Never Forget" has long been associated with the Holocaust. It's a pushback against the type of willed, collective amnesia that allows not just the perpetrators of atrocities but their descendants to go through life unburdened by guilt for war crimes and the privileges accrued as a result of their commission. The documentary "Tantura" shows how selectively the phrase is applied when the subject is the founding of Israel, which killed and displaced Palestinians and had a negative multigenerational ripple effect that continues into the present day. The movie focuses on the fate of Palestinian residents of the title village in the summer of 1948. A mass murder by Israeli soldiers was part of a grim event that included beatings, rapes, and looting.