Fueled by rage, Palestinian lone wolf attacks in 3rd month

The AP reports:

On a recent morning, Palestinian taxi driver Shadi Kaseeb dropped off his two oldest children at school before picking up his first passenger - a seemingly routine start to his day. Before noon, the 31-year-old driver was dead, shot by two Israeli civilians after police said he ran toward them with a kitchen knife.

Five days later, in the same West Bank spot, Shadi's younger brother Fadi rammed his car into two Israelis at a bus stop near a Jewish settlement before being shot dead.

Is it genetic?