alt Hacker NewsBiased much? You could have used: https://en.wikipedia.org/wiki/Aircraft_hijacking
That says:
"Airplane hijackings have occurred since the early days of flight. ...Pre-1929, 1929–1957, 1958–1979, 1980–2000, and 2001–present."
"...Between 1958 and 1967, there were approximately 40 hijackings worldwide..According to the FAA, in the 1960s, there were 100 attempts of hijackings involving U.S. aircraft: 77 successful and 23 unsuccessful....
"..In a five-year period (1968–1972) the world experienced 326 hijack attempts, or one every 5.6 days.."
And your conclusion is "Palestinian" movement (that you wrote between quotes)...invented airplane hijacking?
Classic quibbling over the intended meaning of a comment and its most literal interpretation. Treating it as the commenters 'conclusion' is disingenuous, it is a statement based on the most commonly publicized events. Why would anyone look up a history of all airplane hijackings when it is well known and publicized and in some corners celebrated that the PLO/PFLP performed these actions against civilian aircraft? You only need to know they did it once to know the chance is nom-zero that these partisans present a security risk to civilian aircraft. The appeal to the data is hand-wringing.