The security forces have no choice but to use tear gas on the rioters; they can't open fire on them, because France holds to a doctrine of humanitarianism. However, the rioters pay this no heed and hurl stones in retaliation.
維持秩序的防暴部隊，也只能用催淚彈驅散歹徒，因法國是講人道主義的，不能開槍，但歹徒卻可能無法無天，偷車、街上搶劫、騎摩托車不戴安全帽或逆向行駛，已成家常便飯。