It's of course easy to find similar or even worse incidents in other countries as well. But it's only understandable that many people find this more shocking than similar incidents in other countries.
1. The jews are usually seen as THE ultimate victims of racism, which makes it disturbing to see some of them as offenders acting racist themselves.
There was something similar in Germany just a couple of weeks ago. A few years ago some foreign-looking guy got beaten up by two jobless drunk neonazis and he died shortly after. It was a huge story in the media, the man had a small boy and everybody felt sorry for the poor kid. Today the boy is a teenager in jail, because he started to act pretty much exactly like those people who killed his father: He started to spend most of his evenings being drunk on the streets, beating up and stealing everyone he believed to be german or whose face he simply didn't like. He did just the same as probably thousands of teenage boys, but his case got way more media attention because people had him in mind as a victim and expected him to act just the opposite based on his experiences.
2. People use different moral expectations for different countries. If someone gets death penalty in north korea, it's hardly going to shock anyone because you'd expect things like that to happen on a daily basis in a country with north korea's reputation. Death penalty in the USA causes much more attention in Europe, because it's strange to see a country considered to have high modern ethical standards do something usually believed to still happen only in medieval third world countries.
So it's of course correct to say similar or even worse things happen in countries like Saudi Arabia, Pakistan, Syria etc. as well. But are those countries really the kind of league Israel wants play in, the kind of countries Israel wants to be compared to? That's like the school kid who excuses his bad grades in school by saying "There were two kids who got even worse grades, so what are you complaining about anyway?"
