At the two hour ceremony, the organizers pleaded with Arab countries to continue to push their Palestinian Arab guests to "return" to a country most of them have never entered. Which means that they asked Arab countries to continue their apartheid-like practices of discrimination against their Palestinian Arab populations and never allow them to become naturalized citizens, even if they want to.
The person behind the stunt said
The goal is to consolidate this key in the minds of young people, women and children, to tell them that they they were expelled and deported from their land.
In fact, most of their ancestors simply fled their homes out of fear, after their own leaders fled before them. They thought that their neighboring Arab nations would welcome them and allow them to start afresh, but they didn't count on their own leaders and the Arab leaders to create a myth of Palestinian Arab nationalism meant to ensure that they remain in misery forever. If they would have known how their Arab "brethren" were going to treat them for the next six decades, most of them probably would have stayed put.
The organizer continued:
The fight with the Jews is ideological, and therefore it is imperative for young people and children in particular to be aware of this through awareness by the community, through the organization of such events, and the work of innovative ideas as this key of return.He added a message to Israel, "There will be no security for you," and he called for the Arab and Islamic nation and the Palestinian factions to unite in Jihad and resistance until the restoration of "usurped Palestinian land."
This is the two-state solution that we've been hearing so much about from the New York Times.