If you see the knife grinder in a dream, then such dream indicates the lack of freedom and liberty.
Dream dictionary: Knife Grinder dream meanings
…Dreaming of a knife grinder, foretells unwarrantable liberties will be taken with your possessions. For a woman, this omens unhappy unions and much drudgery….
Treacherous and unscrupulous person, who will take the pleasure in sowing the seeds of trouble and disunion.