I must be slow as hell, I really can't see what you supposedly detected. Mind explaining to the rest of the class?
What is strange is the use of 'minor'. As far as I know, their is officially no caste system in the US, so no minor or major citizenship. It may also be another case of me over-reacting, 'minor' meaning in this situation 'only one'.
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I suppose the referred story is there: http://www.nytimes.com/2013/07/18/opinion/the-drone-that-kil... but I don't know if it's the only time that happened. Close enough I suppose.