Less person, less zoo, less cigarette, fewer hatreds, fewer abuses, fewer misuses of power.

Flip flopping it around. The last three are now countable. The first three, while maybe verging on nonsensical, are grammatically correct. Less zoo, for example, might be used in the context of closing down part of a zoo. 'I have less cigarette left than Joe', also makes sense, if we are comparing cigarette lengths.