1. Imane Khelif and Lin Yu-Ting are two women boxers who have been at the center of a gender controversy at the 2020 Tokyo Olympics. Khelif, a Algerian boxer, and Lin, a Taiwanese boxer, were both disqualified from their matches due to concerns over their physical appearance and whether they met the International Olympic Committee's (IOC) guidelines for female athletes.

2. The IOC's guidelines for female athletes have been a subject of debate and criticism, with many arguing that they are outdated and discriminatory. The guidelines require female athletes to have testosterone levels below a certain threshold, which has been criticized as unfairly targeting certain athletes, particularly those from non-Western countries.

3. The cases of Khelif and Lin have reignited the ongoing debate around the IOC's policies and the need for more inclusive and equitable policies that recognize the diversity of the human body and gender expression. Advocates for gender equality in sports have called for the IOC to review its policies and work towards a more inclusive and fair system for all athletes, regardless of their physical characteristics.