The Palestinians refugees don't have any special status. The main claim is that Palestinian refugees would be unique in that their refugee
status is passed along to their children. While widespread, the claim
is wholly untrue. People born in refugee camps are themselves counted
as refugees. For example, the Nakivale refugee
camp in Uganda was established in 1958 for Rwandan refugees and the people living there
are still tended to by the UNHCR.
The Geneva Conventions definition of refugee:
A. For the purposes of the present Convention, the term “refugee”
shall apply to any person who: As a result of events occurring
before 1 January 1951 and owing to wellfounded fear of being
persecuted for reasons of race, religion, nationality, membership of
a particular social group or political opinion, is outside the
country of his nationality and is unable or, owing to such fear, is
unwilling to avail himself of the protection of that country
And
C. This Convention shall cease to apply to any person falling under
the terms of section A if:
- (1) He has voluntarily re-availed himself of the protection of the country of his nationality; or
- (2) Having lost his nationality, he has voluntarily re-acquired it; or
- (3) He has acquired a new nationality, and enjoys the protection
of the country of his new nationality; or
Using this definition most of the Palestinian refugees, who have not
acquired a new nationality, would be counted as refugees. This is
explained well on the UN's
website:
Descendants of refugees retain refugee status
Under international law and the principle of family unity, the
children of refugees and their descendants are also considered
refugees until a durable solution is found. Both UNRWA and UNHCR
recognize descendants as refugees on this basis, a practice that has
been widely accepted by the international community, including both
donors and refugee hosting countries.
Palestine refugees are not distinct from other protracted refugee
situations such as those from Afghanistan or Somalia, where there
are multiple generations of refugees, considered by UNHCR as
refugees and supported as such. Protracted refugee situations are
the result of the failure to find political solutions to their
underlying political crises.
It is stated even more explicitly on UNRWA's website:
Is the transfer of refugee status to descendants unique to UNRWA?
No. Under international law and the principle of family unity, the
children of refugees and their descendants are also considered
refugees until a durable solution is found. As stated by the United
Nations,this principle applies to all refugees and both UNRWA and
UNHCR have recognized descendants as refugees on this basis.
The principle of family unity is further described in UNHCR's Handbook on Procedures and Criteria for Determining Refugee Status under the 1951 Convention and the 1967 Protocol relating to the Status of Refugees:
- If the head of a family meets the criteria of the definition,
his dependants are normally granted refugee status according to the
principle of family unity. It is obvious, however, that formal
refugee status should not be granted to a dependant if this is
incompatible with his personal legal status. Thus, a dependant
member of a refugee family may be a national of the country of
asylum or of another country, and may enjoy that country's
protection. To grant him refugee status in such circumstances would
not be called for.
The reason UNRWA exists is, as has been pointed out in the comments, because it was founded before UNHCR existed. This was the first big war and refugee crisis after the UN was founded and it certainly was a feeling that it should solve the crisis, especially as the UN had been
involved in the creation of the State of Israel from the
beginning. With the failed Partition Plan and all that.
There is a right of return for all refugees because conventions and legal texts are clear that a persons rights have been violated when that person is driven from or prevented from returning to his or her home. But that right of course has been hard to implement in many conflicts around the world.