Demszky, D., Garg, N., Voigt, R., Zou, J., Shapiro, J., Gentzkow, M., Jurafsky, D., 2019. Analyzing Polarization in Social Media: Method and Application to Tweets on 21 Mass Shootings, in: . Association for Computational Linguistics.. https://doi.org/10.18653/v1/n19-1304