"According to the report by The New York Times, the crowd had been identified as civilians by U.S. drone operators based in Al-Udeid airbase in Qatar. The drone operators were reportedly stunned seeing the first 500 lb bomb dropped, followed by a second 2,000 lb bomb on the survivors; 80 people were killed including Islamic State fighters according to The New York Times report.[2]"
How on earth is dropping a bomb supposed to be a root cause? If you really wanted to point out root causes you would link to the most important massacres instead of expecting us to do your research for you.
"According to the report by The New York Times, the crowd had been identified as civilians by U.S. drone operators based in Al-Udeid airbase in Qatar. The drone operators were reportedly stunned seeing the first 500 lb bomb dropped, followed by a second 2,000 lb bomb on the survivors; 80 people were killed including Islamic State fighters according to The New York Times report.[2]"
How on earth is dropping a bomb supposed to be a root cause? If you really wanted to point out root causes you would link to the most important massacres instead of expecting us to do your research for you.