This is nothing but Northeastern propaganda.
Lets see why,
He posts a horrific picture and accuses a particular group (Alshabab).
1) nowhere do we see any trace of Alshabab
2) if this is the justice the people chose, who r we to deny them?
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Also, what is more horrific:
Case 1) One man kills another man, and the family/clan of the murdered man shots dead another man of the same clan of the murdered. An innocent man, who happens to be in most cases a succesfull individual i.e a doctor, businessman, proffesor etc. Aano Qabiil ''justice''
Case 2) One man kills another man, and the family of the murdered man choses for either to execute the murdered as revenge or give him anmesty. In the case of the picture, the murderer is been executed by the son of the man he murdered. Islamic justice
Which case is horrific and injustice?
Clearly any sane mind would say Case 1, but to a Northeastern mind who not to long ago cheared for the Ethiopian occupation and its massacre of Somali civilians, Case 2 is more horrific.