Kristen Stewart tore a paparazzo a new a-hole yesterday... dropping f-bombs and screaming, "You don't deserve to breathe the same air I do."
The video's intense ... Kristen is seen hiding behind a gate, waiting for a ride outside some building in Los Angeles, when the photog -- not TMZ -- asks, "Why are you saying f**k off?"
Obviously, Kristen was pissed even before the camera rolled ... but it's unclear what took place BEFORE the paparazzo started recording.
But Kristen, who appears like she's been pushed to a breaking point, unloads, saying, "Because you're a piece of s**t and you don't deserve to breathe the same air I do." That's just the beginning. It's crazy. Check it out.
'You Don't Deserve to Breathe the Same Air I Do'
7/30/2013 4:00 PM PDT BY TMZ STAFF
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