Let me put it this way then.
There is not a single justifiable, legal or moral reason why Israel should occupy any part of Palestine,... therefore everything they do there is illegal by default.
Illegally occupying the land of another in direct contravention of a dozen or more International Laws, against the wish of it's people is about as bad as it gets especially when we see how it has been achieved and the practices used to maintain it.
No, I'm not going to go soft on them, and if it were your country I don't think that you would either. It's just too easy to for people to look the other way because it does not directly affect them.
True but they do occupy Palestine and as such are responsible for its security therefore they must police it.
Just to back that up...The occupying power has the duty to restore and maintain public order and safety in the territories controlled by its forces, in accordance with Article 43 of the Hague Regulations.
In order to carry out this duty, the occupying power is entitled to "take such measures of control and security in regard to protected persons as may be necessary as a result of the war", in the language of Article 27 of the Fourth Geneva Convention. Such measures may include the use of force. However any use of force in circumstances outside combat, whether by soldiers or police officers, must be consistent with international law enforcement standards, including the 1979 UN Code of Conduct for Law Enforcement Officials (Code of Conduct) and the 1990 UN Basic Principles on the Use of Force and Firearms by Law Enforcement Officials (Basic Principles).
Article 3 of the Code of Conduct reflects the principles of necessity and proportionality: law enforcement officials "may use force only when strictly necessary and to the extent required for the performance of their duty." The Commentary to this article specifies that the use of firearms is an extreme measure:
" Every effort should be made to exclude the use of firearms, especially against children. In general, firearms should not be used except when a suspected offender offers armed resistance or otherwise jeopardizes the lives of others and less extreme measures are not sufficient to restrain or apprehend the suspected offender. In every instance in which a firearm is discharged, a report should be made promptly to the competent authorities."
According to the Basic Principles, law enforcement officials faced by disorders, including violent assemblies,
"shall not use firearms against persons except in self-defence or defence of others against the imminent threat of death or serious injury, to prevent the perpetration of a particularly serious crime involving grave threat to life, to arrest a person presenting such a danger and resisting their authority, or to prevent his or her escape, and only when less extreme means are insufficient to achieve these objectives. In any event, intentional lethal use of firearms may only be made when strictly unavoidable in order to protect life."