Its a fact that many more arabs than jews build illegally but if they do then their construction projects come down just same as arab ones do. All countries have and need planning laws ( including your own country ) just like they need other laws to keep order in society even if you don't like the laws and feel they are unfair. It doesn't matter if your Bill Gates or if your living bellow the poverty line le law says your not allowed to do it and your going to be punished if you break into somebodies home and rob them. You can own a Ferrari or an old banger thats can barely drive you both have to follow the same speed limit. There is nothing abusive, cruel or inhumane about enforcing the law.
UN: Gaza could be 'uninhabitable' by 2020 if trends continue (AP)
from the article: Israel to triple demolition rate for illegal Bedouin construction