Total agreement. What would the Romans do?
Secure your borders and stop letting Muslims immigrate to France. Then you outlaw Islamic female attire. Burkas are not allowed to be worn in public. Have a heavy police presence in the so called "no go zones", aggressively enforce the law, including minor offenses. Monitor the mosques in France. If the mosque is advocating Shari law shut it down and deport the Imam. Lastly out law Shari law and deport any and all that support making Shari law the law of the land.
Now if we are talking Romans, substitute execute for deport in the above.