This blurb is on the Breaking News of Haaretz:
20:09
Peretz: Incident of soldiers beating left-wing activists will be investigated (Haaretz)

It seems some left-wing protestors were trying to block roads near Hebron and disturb checkpoints. The soldiers tried to break things up and clear the area and things got violent, as they often do in these situations. Some left-wingers must have gotten their heads busted.

So Amir Peretz announces he has to investigate the incident.

Funny, but I do not remember him, or any other minister, saying any such thing such as a need for an investigation any of the multiple times right wing activists or settlers get beaten by soldiers or police. I do not remember hearing any such statement from either Peretz or Dichter (Minister of Internal Security) when the students got (and are still getting) their heads beaten in during their protests this past week.

Only left-wing protests cause an uproar when they get violent? What is different about left-wing protests than right-wing protests?

Things that make you go "hmmmmm...."