Complex sentence: It has been alleged that the killings were retribution for the attack on a convoy of Marines with an improvised explosive device that killed Lance Corporal Miguel Terrazas and many news reports have compared the incident to the My Lai massacre.
Split into simpler sentences: It has been alleged that the killings were retribution for the attack on a convoy of Marines with an improvised explosive device that killed Lance Corporal Miguel Terrazas. Many news reports have compared the incident to the My Lai massacre.