juggernaut

noun3

1. •
   A literal or metaphorical force or object regarded as unstoppable, that will crush all in its path.

   • […] poor Johnny Tetterby staggering under his Moloch of an infant, the Juggernaut that crushes all his enjoyments. — 1859
2. •
   (UK, Ireland) A large, cumbersome truck or lorry, especially an articulated lorry.

   • Silently and gracefully I free-wheeled across the path of three juggernauts, [...] glided across the hard shoulder and came to rest halfway up a grass bank. — 1983
3. •
   An institution that incites destructive devotion or to which people are carelessly sacrificed.