From Wikipedia:
In July 2005, [Andrea] Mitchell was forcibly ejected from a room after asking Sudanese President Omar el-Bashir some pointed questions. “Can you tell us why the violence is continuing?” (referring to genocide in Sudan’s Darfur province). “Can you tell us why the government is supporting the militias?” “Why should Americans believe your promises?” At this point two armed security guards grabbed her and shoved her out the door.
ibid:
[Cindy] Sheehan removes her jacket, uncovering a t-shirt with the words “2,245 dead. How many more?” Capitol Police Officer Mike Weight removes her from the gallery and handcuffs her before Bush arrives.