Yourish led us to this interesting graph that shows the "inhumane, illegal" fence and "brutal repressive" security campaign Israel is building around the territories seems to actually be working.
Sure, the numbers are IDF's, but while that may make the "foiled" number higher than it should be, the drop in the "successful" column cannot be papered over. In history, walls of this sort have not been very effective (c.f. China's Great Wall and our own southern border). However, like Morocco, Israel may have gotten lucky (for once) with a geography that naturally allows this sort of thing to work.
Actually, China's Great Wall was extremely effective for hundreds of years, and was instrumental in repelling numerous invasions.
The only controversy I've heard about its effectiveness has come from people who blame the wall for "forcing the Manchurians to attack China to survive," which sounds too much like the blame-the-victim game similar intellectuals are now playing with America.