I highly doubt that. Read Gideon Levy's article on IDF justice. I believe the number of falsely killed Palestinians in the West Bank is around 5000 in the past 10 years. Not to mention, if a Palestinian throws a rock, even a child, ends up in detained for days. If a settler shoots a Palestinian, burns his house, attacks his children, he gets kicked out of the West Bank for 6 months. Hard to see where you got your idea from.
Thousands protest outlawing of Islamic Movement in Umm al-Fahm in northern Israel (Haaretz)