As the DN producer explains, she was present at a meeting of a group called "I-Witness" -- which videotaped police behavior at the 2004 GOP Convention in New York and helped get charges dismissed against hundreds of protesters who were arrested. The police surrounded the St. Paul house where they were meeting even though they had no warrant, told them that anyone who exited the house would be arrested
basically broke into the house, pointed weapons at everyone inside, handcuffed them, searched the house, and then left. Here is a blog post from one of the members of I-Witness asking for help during the time when they were forced to stay inside the house (see the second post -- it reads like a note from a hostage crying out for help). This is truly repugnant, extreme police behavior designed to intimidate protesters, police critics and others, and it ought to infuriate anyone and everyone who cares about basic liberties.
UPDATE IV: More here, including on the Federal Government's role