The hooliganism that expresses itself in the form of car fires in e.g. Gothenburg is a consequence of the non-solidarity class society where there are no jobs for everyone and where certain neighborhoods are allowed to be neglected and develop into ghettos. When you and most of the people you know have no future, hopelessness sets in. Hooliganism is an expression of this hopelessness.
The remedy is more skilled and unskilled jobs with decent conditions and wages. More qualified jobs so that even immigrants who continue their studies after high school can get a job. More unqualified so that the road is not so long and difficult for those who want to contribute but may not be able to do university studies.
Without dignified conditions, no social peace.