The human slave trade also provided employment, but that was no argument for perpetuating it. In any case, in many countries that have restrictions or bans on circuses with animals, human-only circuses have flourished.
我们也不必因马戏团提供了就业这种观点而举棋不定。奴隶贸易同样提供了就业，但我们没有理由让其存在下去。在任何情况下，在许多限制或禁止拥有动物的马戏团的国家里，只有人类表演节目的马戏团也照样能够蓬勃发展。