The County of Los Angeles thinks the terms "master/slave" should be avoided: they are socially unacceptable!
http://www.snopes.com/inboxer/outrage/master.asp
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
