War of words: why journalists need to understand grammar to write accurately about violence

The recent killing of unarmed Palestinians by Israeli forces has sparked not only a reasonable outcry, but commentary on the language journalists use to report these events.
For instance, writer and English professor Moustafa Bayoumi, of City University of New York, wrote:

It is the peculiar fate of oppressed people everywhere that when they are killed, they are killed twice: first by bullet or bomb, and next by the language used to describe their deaths.