to get the greater amount or larger part of something bad.
Ordinary citizens will bear the brunt of higher taxes.The oldest parts of the town bore the brunt of the missile attacks.
bear the brunt (of something)
To suffer the worst part of an unpleasant or problematic situation. When our system crashed, the call center employees bore the brunt of our customers' anger.Because I came home late, my sister bore the brunt of our mother's frustration about her job.
bear the brunt of
be the person to suffer the most (as the result of an attack, misfortune, etc.).
The origin of brunt is unknown, and may be onomatopoeic. The sense has evolved from the specific (‘a sharp or heavy blow’) to the more general (‘the shock or violence of an attack’).