Before all of you junior crusaders get your panties in a wad, there's not much basis to the suit, and it is from a fringe group. While religious imagery (including crucifixes, Star of David) is essentially inappropriate constitutionally in government and other public places, there is considerable authority and precedent allowing it to remain when it is embodied in a display that advances or represents a nonreligious purpose. Here the memorial represents an event in history where the Jewish symbol is necessarily entertwined with the historical event.

Now Christmas and Hannukah displays are a different story. The Star of David or a Nativity are in this context constitute explicitly religious expressions, and courts have properly held that they do not belong in government buildings, parks, etc. However, decorated trees, wreaths, and menorahs have been found to have seasonal and cultural meanings beyond the religious context, and therefore these displays have been found to be acceptable decorations for the season.

Anyone who wants the nativity, you can display it freely on your property or church all year round.