The clan-based armed Bearing_arms opposition groups eventually managed Control to overthrow Change_of_leadership the Barre government in 1991 .

The rebellion started Process_start in 1986 when Siad Barre began Process_start attacking Attack clan-based dissident groups opposed to his rule with his special forces , the `` Red Berets '' ( `` Duub Cas '' ) .

Siad Barre 's `` collective punishment '' refers to clan-based violent actions by former Somalia president Siad Barre against what he viewed as rival clan members during the anti-Barre Somali Rebellion .

The most egregious forms of clan-based violence perpetrated Committing_crime by the Barre dictatorship were against the Isaaq and Majeerteen clans .