During the protest on Thursday, skirmishes broke out between groups of young people from Algiers and those who had arrived from outlying provinces.
But the region's political conflicts are often laced with ethnic enmity, and some witnesses and local news outlets suggested that the violence started as a fight between groups of young Uzbeks and Kyrgyz, perhaps backed by opposing political forces.
The latest demonstrations by the majority Shiite population came a day after clashes between groups of young Sunnis and Shiites in the town of Hamad, outside of the capital, in the first sectarian clashes since protests began last month.
In the Manhattanville Houses, a young couple pushing their baby in a stroller said there had been constant fights between groups of young men from the two projects in recent weeks.
And there was not long to wait until a new one erupted: across London, skirmishes broke out on Sunday between groups of young people and large numbers of riot police officers, which one officer said were drawn from forces around London.
Few molecular studies have been published on this topic, reporting compositional differences between groups of young adults (20 50 years old) and elderly with a wide interval of age, ranging from 60 to 95 years old [14], [16], [17].
