Jackboot

[Rihanna]

A thick military boot.
A common epithet, used to conflate someone with Nazism.

[Marquetta]

A large leather military boot reaching to the knee.

[Dianne]

Thick leather boots that go to the knee, used my military forces in the 17th, 18th, and 19th centuries.

Someone (usually a leader of military or police forces) that will do [whatever it takes] to accomplish their goals, [the walking] embodiment of [the ends] justify the means.

[Marquetta]

a long boot that covers the leg up to the knee, especially as worn by Nazis