Back in July, when Palestinian Arabs protested against the use of metal detectors to secure and protect visitors to the Temple Mount from terrorist attacks, Walter Russel Meade made an interesting point. He noted on his website, The American Interest,
the key role Palestinian terrorism has played -- not only in the innovation and development of terrorist strategies, but also in the effort to protect against them:
With the possible exception of al-Qaeda, Palestinian terrorism—which pioneered the use of plane hijackings, airport attacks, and suicide bombings—has perhaps done more to force the introduction of metal detectors into our daily lives than just about any other cause.
While plane hijackings in the 1970's were just as easily associated with Cuba as with the Palestinian Arabs, it was the latter that pushed the US to increase security on airplanes.