I agree that if somebody crictises Isreaii, but not other contries that have the same policies that they are at best being 'selective' or anti-semitic.
Ok.
To be honest I had never heard of that wall before!
It's not actually a big deal. It's just a border fence.
is there not a difference though that the wall is buit on land that has been part of Spain for over 500 years and the people enlcosed wish to be part of Spain while the wall Isreal is building isn't in the pre-67 land and is enclosing people that do not wish to be part of Isreal?
Not really.
The land is part of Spain because Spain once invaded northern Africa and took it. They kept it so long because they always refused to give it back.
Israel took the West-Bank when Arab armies assembled at the borders and threatened invasion and when the Jordanian army invaded Israel from the West-Bank.
The Israeli wall is built on land occupied, but not annexed by Israel. This is completely legal according to international law, or at least it has been until the UN decided that in this case, it isn't.
The border fence does not enclose anybody who does not want to be part of Israel. In fact Israel, because of the fear of a "demographic threat" has no interest in having Arab towns located within the fenced region.
What the wall does enclose is Jewish towns in the West-Bank, Jewish towns that Israel wants to keep. Some Israeli politicians, notably the foreign minister have offered land with Arab towns in Israel in exchange for the jewish towns, but one problem is that the Arabs in those towns often do not want to become part of an Arab state.
The fence certainly is a huge inconvenience for many people in the West-Bank because it cuts through villages and towns and often cuts off farmland from the villages of its owners. But the point is that it is in absolute terms less of an inconvenience than the Berlin wall, yet there are many left-wingers, especially in Germany, who condemn the Israeli border fence but defend the Berlin wall.
This is a map of the wall:
http://www.passia.org/palestine_facts/MAPS/newpdf/WestBankWall.jpgAs you can see the wall pretty much follows the 1948 cease-fire line (I'll never understand why that line is suddenly considered a "border"), except in Jerusalem, where it follows the city limits of Jerusalem (and Jerusalem was annexed by Israel*) and north of Jerusalem, where the wall encloses Jewish West-Bank towns. (There is a Jewish community in Hevron as well, but outside the enclosed area in the south.**)
Note that the statistics part of the map is total nonsense because it includes Jerusalem as part of the "West-Bank". It also ignores the fact that, according to the Palestine mandate borders all of Transjordan (Jordan) is "Palestinian" as well.
Mandate Palestine:
Israel (including Jerusalem) is under Israeli control.
Gaza and Jordan are under Arab control (although obviously not the same such).
5% of the West-Bank are under Israeli control.
40% of the West-Bank are under Israeli military and PA civilian control.
55% of the West-Bank are under PA control.
MOST of Palestine is under Arab control.
*Israel annexed Jerusalem in 1980 but the UN declared the annexation illegal because Israel is a Jewish state. The UN didn't phrase it that way, but has a history of accepting annexations if done by non-Jewish states. Or at least I don't remember the UN condeming the Russian annexation of Koenigsberg or North-Vietnam's annexation of South-Vietnam. And neither did the UN ever declare the "Palestinian cause" for illegal because of its claims to all of Israel (which "Palestine" would apparently want to annex and which Arab armies have tried to invade and annex in the past).
**The often referred-to "road map" is based on a 1994 peace treaty that actually recognises the Jewish "settlement" in Hevron (which is itself over 3000 years old). Today, in spite of the actual peace treaty, the "settlement" is considered "illegal" which is why so many Israelis are opposed to Obama's plan to freeze settlement building in the West-Bank. If a 3000-year old Jewish town specifically allowed to exist by the actual peace treaty is "illegal", what value does a peace treaty have and what is the meaning of the term "settlement" anyway?