trample someone under foot—oppress or subdue a person; treat smb. harshly or ruthlessly:
- We loan them a degree of power, we do not grant them the right to trample us underfoot as they are doing.
walk all over someone—
1. make smb. do whatever one wishes; take advantage of a person:
- Ashley was a hopeless romantic, but her boyfriends walked all over her.
2. (Sport) win decisively over an opponent:
- Let them think that the Redskins will walk all over our team. Let them think it!