人をからかってはいけない。

man; person; human being; mankind; people; human (Homo sapiens); humans as a species; character; personality; man of talent; true man; another person; other people; others; adult

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to ridicule; to tease; to mock; to chaff; to razz; to banter with; to make fun of; to poke fun at; to make cracks about

if ... then; when; and; why don't you...?; the more (one does something); because; since