Collateral damage' is a euphemism adopted by the US military in the mid 20th century. The word collateral derives from the Latin word 'collateralis', which means 'together with'. So, when an intended target is struck and damage or death is caused nearby, that damage is 'collateral'.
a video projection of two male swans engaging in a deadly conflict while competing for the affection of a female. The swans swimming in Lake Ontario begin their match with a contentious greeting. Their quarrel reveals they can be violent and invasive creatures, despite their beauty. Swans, native to Europe and eastern Asia, were brought to North America as pets and ornamental birds in the late 1800’s to early 1900’s. They have multiplied, wiping out entire wetlands of submerged aquatic vegetation, their preferred food source. Their human-enforced migration has caused their displacement and harm to their new environments.