Silence on campus

Found this Silence on the unofficial "Doctor Who Wall" beneath PAC. Not sure how recent this is, as I haven't seen it since last week. Wait...what was I talking about again?
Edit: Removed by Jan. 30 at the latest. Daleks are still there.

Art type: Sticker
Date of picture: January 18, 2012
Where: Beneath PAC (North Campus)
Active? Removed Jan. 30 at the latest.

[Dalek]
[More Daleks]