As I have mentioned before I consider the "non-violent" protests inspired by the color revolutions and the Arab Spring as classical examples at mob rule. The protesters do not represent the majority of the population but they just behave that way and then are accepted as such by the Western press. All the behavior like occupying the most important square of a town is supposed to transfer message of entitlement.
This climate of mob rule has continued after the fall of the regimes in Northern Africa. Reports from Tunisia tell about militia's imposing Islamic rules in the villages and towns. Most alcohol shops have been destroyed or disappeared. Many women feel now forced to walk veiled. To a lesser extend the same process is at work in Egypt.
In Libya the mob rule has gone one step further with its steady growing militias. Recently Islamic militias destroyed Sufi shrines. They were busy for days and it took place in the center of Tripoli but the government did not interfere. The interior minister defended it as that he didn't want to endanger government troops. Only after the killing of the US ambassador was he forced to resign.
The recent eviction of several militias from Benghazi may sound as an improvement but it is once again "mob rule" instead of the government resuming the monopoly of power.
According to the NYT another reason for not abolishing the militias is that there are too few authorized police to do the job. But that is nonsense. One could absorb some militia members in the police with the explicit requirement that they follow studies. This would place them at least under government control. According to the article Libya's government has now ordered the breakup of the militia's. But the article is skeptical whether that will work.