Looks like it happened in Chicago, last october. From what I can find, they dragged her off, shuffled her around for a few hours, then released her without charges. In December, she was one of the people that testified before congress about ICE’s abuses.
Sources:
newrepublic.com/…/federal-agents-immigration-cras…,
www.usatoday.com/story/news/…/87074841007/