Detecting Hashtag Hijacking for Hashtag Activism Pooneh Mousavi author Jessica Ouyang author 2021-08 text Proceedings of the 1st Workshop on NLP for Positive Impact Anjalie Field editor Shrimai Prabhumoye editor Maarten Sap editor Zhijing Jin editor Jieyu Zhao editor Chris Brockett editor Association for Computational Linguistics Online conference publication mousavi-ouyang-2021-detecting 10.18653/v1/2021.nlp4posimpact-1.9 https://aclanthology.org/2021.nlp4posimpact-1.9/ 2021-08 82 92