backlash

(noun) a movement back from an impact. Synonyms: recoil, repercussion, rebound.

(noun) an adverse reaction to some political or social occurrence. Example: "There was a backlash of intolerance."

(verb) come back to the originator of an action with an undesired effect. Synonyms: backfire, recoil. Example: "Your comments may backfire and cause you a lot of trouble."