Inside the Supreme Court battle to 'Save Women's Sports'

It was a crisp day in January when Riley Gaines stood in front of a divided crowd on the Supreme Court steps.

Right in front of her were her supporters, mostly women dressed in casual or formal clothing, clapping as she spoke. But just to their left stood a horde of pro-transgender activists, some wearing costumes and others partially unclothed, shouting curse words.

"They're so angry," Gaines told Fox News Digital of the crowd that day.

"On our side ... you saw people smiling...