Having watched the video .. the title does not really reflect what happened.
Yes, the student (Kathy) refused to try on a hijab ... but that isn't the complaint. Kathy took several pictures of the booth and the sign "My hijab empowers me" and posted them on her "social media account" along with her commentary.
One of the girls in the photo objected to the picture being posted w/o her consent as well as the commentary.
The points that Kathy, now facing possible (though I doubt it) expulsion, was making in the video were "this is fascism" and she "has a first amendment right to express her opinion". Kathy's right on both counts.