123441b0_guage__How_to_Speak_Vegetarian__Examples
Passive voice to refer to what humans do to NHAs (hides who is responsible) Active voice to refer to what humans do to NHAs (names those responsible) [Examples] 
The new-born male chicks were disposed of. The supervisor instructed the staff to kill the new-born male chicks, because males don�t lay eggs.
World Vegetarian Congress, 2004 - Animal-Friendly Language: How to Speak Vegetarian
Examples