Yes, sadly the French response resulted in the death of a Frenchman. However, I think this is the only way to go as negotiating or persuading these thugs is a lost cause.
The only things which will improve the situation is a stable government in the country which provides opportunities for its citizens.
Until then (and because such a thing is unlikely for a long, long time) the thugs need to know that there will be violent resistance and rescues which will most likely result in their death.
(And I am a peaceful, wishy-washy liberal!)
Roger in France