@fabio
The word "dehumanizing" means to make someone seem non-human to yourself or to someone else.
A soldier can only kill if they picture the person as "the enemy" or "a target". They have to shut down their empathy. The man in the picture has dehumanized the woman. For what he's doing he should feel the full force of the judicial system (which in the west bank is absent, sadly).
But to the viewer both these people are anonymous. Neither of us have ever met them. Most people will use them as representatives for the groups "the Palestinians" and "the Jews" or "the Isrealis".
Would you have also shared pictures of angry Palestinians trying to kill children, or raping girls? Or of grinningly loading rocket ramps? Of setting off bombs in Cafés? I hope not, and you shouldn't.
I stand by my opinion. As much as I agree with you that the violence in Gaza and in the West Bank has to stop, circulating pictures like these does not help. Instead, maybe think of supporting groups like Omdimbeyachad, or Women Wage Peace, or Women Of The Sun, and others.