Saudi Arabia's Apartheid Wall?

According to a story in The Times (London), Saudi Arabia intends to build a wall along the entirety of its 560-mile border with Iraq. While on the one hand this cannot be seen as a ringing endorsement on the part of the Saudis that Americans are bringing security to the region, there is another significant point: I echo Cliff May (from his latest Foundation for the Defense of Democracies newsletter, from which I found this story) when I assume that we will start seeing protests in the Muslim world, on college campuses, and the like.

Or is it just possible that every time someone builds a border wall we actually ought to take it on its merits, argue pro and con, and leave out the mindless Apartheid and Berlin Wall analogies? Some walls are bad. Some walls are good. Some walls are necessary evils. Many are none of the above. Inane analogies tend not to be points for discussion, but rather points of accusation, intended to chill, not further, debate.