roughshod

adjective

1. 1

   unjustly domineering

   incensed at the government's heavy-handed economic policies

   a manager who rode roughshod over all opposition

2. 2

   (of persons or their actions) able or disposed to inflict pain or suffering

   a barbarous crime

   brutal beatings

3. 3

   (of a horse) having horseshoes with projecting nails to prevent slipping