Activist Riley Gaines responded to gymnast Simone Biles after their heated social media exchange about transgender athletes in women's sports.

Biles criticized Gaines for targeting a trans athlete on social media, calling her a "sore loser" and suggesting inclusive alternatives.

“All the horrific sexual abuse @Simone_Biles witnessed and spoke out against caused by one man, yet [she] believes women should be forced to strip naked in front of men to validate the man’s feelings,...