jackbooted

adjective2

1. •
   Wearing jackboots.

   • For, as the mighty cavalcades approach / Periwigg’d, Jackbooted, to announce the coach; / A thousand lamps spontaneously appear, / Through the long vista—visitors to cheer.— [...] — 1819
2. •
   (figurative) Authoritarian or oppressive, especially in a cruel or violent manner.

   • [T]his discourse is highly reminiscent of anticommunist rhetoric [...] emphasizing the totalitarian, jackbooted character of the enemy. — 1997