run roughshod over (someone or something)

run roughshod over (someone or something)

To treat someone or something with marked disdain, brutality, or contempt; to act without regard for the well-being of something or someone. In her ascent to the top of the political ladder, the senator ran roughshod over anyone who stood in her way. This new administration has run roughshod over the political goodwill that the previous president forged with the recent foreign ally.
See also: roughshod, run