Children's artwork and posters of Martin Luther King, Jr.
From the Defending Dissent Foundation:
"Doors were kicked in during the early morning raids in Minneapolis and Chicago and personal belongings including childrens' artwork, posters of Martin Luther King, Jr, were taken, as well as cell phones, computers and boxes of paper records. About a dozen activists from Illinois, Minnesota and Michigan have been subpoenaed to testify before a federal grand jury. The FBI emphasized that no arrests were made, but that evidence was being collected regarding the possible 'material support' of terrorism. The 'material support' statute is so broadly written that it can, and does, include international peace-building activities that are not in any way intended to support terrorism."
Meanwhile, it's perfectly okay for Israeli commandos to board an aid vessel in international waters and shoot an American four times in the head.