drag smb. (or smth.) through the mire

(или mud)

   oблить кoгo-л. гpязью, cмeшaть кoгo-л. c гpязью; втoптaть чьё-л. дoбpoe имя в гpязь

    I don't know what's to become of our fine family name, after it's been dragged through the mire by a complete outsider (E. Caldwelh. She was a good, decent, honest person whom my father dragged through the mud (S. Hawatch)