(Portland, OR)  --  Prosecutors are dropping charges for a Portland woman who suffered a broken nose while protesting against police violence.  Margaret Zebroski was arrested for blocking traffic during the February 20th protest.  Videos have showed her being dragged into a street by police who then shoved her face into asphalt.  A misdemeanor criminal case against Zebroski for disorderly conduct was dropped after Deputy District Attorney Haley Rayburn watched videos of the incident provided by Zebroski's attorneys.