Why do Parisians love uprisings?

At present, other European countries have adopted relatively strict immigration policies, while France has become a traditional "immigration paradise" because of its history of "freedom, equality and fraternity". In this case, some French people think that immigration has brought high crime rate and high unemployment rate to the local area. They regard immigration as a threat to the welfare system, but they often cannot interfere with illegal immigrants under political excuses, thus breeding considerable social dissatisfaction and discrimination.