The PLO has a formal policy of paying terrorists for attacking Israelis. If the terrorist is killed their family gets a monthly pension and if the terrorist is jailed their family gets monthly support payments. These payments usually exceed what Palestinians receive for nonviolent work. For more insight into why Palestinians and Middle East Arabs see it as an honor to earn a monthly pension for their family see Embedded: A Marine Corps Adviser Inside the Iraqi Army, (2009, Wesley R. Gray).
If your family lives better than other families in your community, and the government makes these payments to your family, your society is endorsing terrorism and the murder of civilians. How can the Palestinians ever reach a peace between themselves and the Israelis when the Palestinian policies encourage genocidal acts? This problem is explored in depth by BloombergView in: http://www.bloomberg.com/view/articles/2016-07-01/the-palestinian-incentive-program-for-killing-jews