Former NCAA swimmer Riley Gaines alleges that she was assaulted on Thursday on the campus of San Francisco State University after delivering an anti-transgender speech. Her speech, organized by conservative organization Turning Point USA, opposed the participation of transgender women in sports. Gaines claimed that one person hit her twice, striking her shoulder and grazing her face. Other protesters then cornered her before campus police escorted her out. Protesters can be heard shouting on the video she posted, but it does not show the incident itself. Marjorie Taylor Greene, a Republican representative, tweeted about the incident calling the protesters "transgender terrorists" and--without evidence--declaring that the transgender movement was "out of control and a danger to children and our society." The role of transgender athletes in women's sports is a source of debate across the US, with critics alleging that it creates an unfair advantage. Twenty states have passed restrictions on their participation, though supporters argue that transgender women should be allowed to compete in sports in line with their self-declared identity.