Comment by root-parent

Biased 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?