Correct. They arrest by proxy in this case.
False. You have no evidence that French police serve as Jewish proxies. You have to either provide evidence or admit you are just spreading lies that right-wing extremist websites tell you to spread.
laws against criticizing them or interpretation of laws in that regard fear criticism, otherwise they wouldn't push to outlaw it.
There are no laws against criticizing Jews in France. You have presented no evidence that French Jews fear criticism.
You can't really fault the Jews for encouraging police protection, everybody wants to be protected by the police and panders accordingly. Cops around here, for example, get free coffee pretty much anywhere they go.
You have failed to show any indication that French police are working to protect Jews from criticism.