No, a burrito to the face is physical abuse. Being verbally and physically abused every day of your job is not how jobs are supposed to work, and viewing things like that as silly small things to be affected by is itself pretty damaging.
If I lean across the counter and punch you in the head, you're allowed to have some kind of feeling about that. Especially in a setting that heavily discourages and may even punish defending yourself, the way retail often does.
Convincing yourself it's fine because the world is cruel keeps the world cruel. More importantly, it keeps you from considering you deserve anything other than cruelty. We need to care about each other.