TRANSCRIPT:
On her way to meet friends for an Iftar dinner, Tufts University student Rumeysa Ozturk was approached by a group of six people - one snatching her phone.
"You wanna take those masks off?"
A bystander starts filming as they take her backpack before escorting her to a waiting vehicle.
OFFICER: "We're the police, we're the police."
BYSTANDER: "Well you don't look like it. Why are you hiding your faces?"
Ms Ozturk was in the US on a Fulbright Scholarship - studying for a PhD.
Her friend Professor Reyyan Bilge says there is no reason for this arrest.
" She is an utterly nice soul and a decent person who only wants the good for other people, who's really caring. But who is ambitious in her work and is very hard working and very studious person, and a student overall."
Friends say the Turkish national wasn't closely involved in pro-Palestinian demonstrations, but last year co-authored an opinion piece in her student paper.
The article had urged the university to divest from companies with direct or indirect ties to Israel, and acknowledge what she described as the Palestinian genocide.
The Department of Homeland Security says she had engaged in activities in support of Hamas.
These protesters say she hasn't committed any crime.
VOXIE 1: It's really just one step away from fascism. Actually, it's not even a step away. It is full blown fascist intimidation."
VOXIE 2: "It's just like one of so many signs, and just I feel like every day it's another thing that Trump has done and it's just more and more disturbing."
Vincent Warren is from the Centre for Constitutional Rights and says turning a blind eye to such arrests only strengthens what he has called an authoritarian regime in the United States.
"By not resisting, by not fighting back, including law firms, major law firms, civil rights organisations like the Center for Constitutional Rights - If we don't continue to resist and push back, we are allowing this country to turn into an authoritarian nightmare that we may never come out of."
Her lawyer says Ms Ozturk is currently being held without charge.
She has been transferred to a facility in Louisiana - despite a federal judge ordering she remain in Massachusetts.
The facility is the same one where activist and Columbia University graduate Mahmoud Khalil is also being held, after being detained earlier this month and accused of being a Hamas sympathiser.
US Secretary of State Marco Rubio is providing little detail about Rumeysa Ozturk's case, but has confirmed the number of revoked student visas stretch into the hundreds.
RUBIO: "Maybe more, might be than 300 at this point. We do it every day. Every time I find one of these lunatics, I take away the visa."
REPORTER: "You're saying it might be more than 300?"
RUBIO: "Sure. I hope, I mean at some point I hope we run out cos we've gotten all of them, but we're looking every day."
