Source : Webster's Revised Unabridged Dictionary (1913)

Nonresistance \Non`re*sist"ance\, n.
   The principles or practice of a nonresistant; passive
   obedience; submission to authority, power, oppression, or
   violence without opposition.

Source : WordNet®

nonresistance
     n : group refusal to resort to violence even in defense against
         violence