backlasher

/ˈbækˌlæʃər/
noun
  1. A person who reacts strongly and negatively to something, often as part of a group.
    • Each new policy brought out the backlashers in the community.
    • The backlashers organized a petition to reverse the decision.
    • The backlashers flooded the company's social media with complaints.
Antonyms
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