David Reuben Jerome Heise was a social psychologist who originated the idea that affectual processes control interpersonal behavior. He contributed to both quantitative and qualitative methodology in sociology. He retired from undergraduate teaching in 2002, but continued research and graduate student consulting as Rudy Professor of Sociology Emeritus at Indiana University. He was most well known for his work on affect control theory. .. more
A big recommendation to share with your readers/listeners - wear sports apparel (preferably NFL or college football) at the protest. Seeing people protest wearing this does humanize people and pushes back against the fake perception that it's leftist extremists.