A library I was in once wouldn't let me look at the Anarchist Book Fair site saying 'violent content'.

LIbraries don't publicise that they put blocks on the internet on their computer systems. I once tried to access Banksy's website (the graffitti artist) in the library and found it blocked, but I was able to access every other web article ever written about him, including one with the F word in the title! I did a little experimenting and found I could get into the BNP website, but not Blood and Honour (I was only experimenting!), I could get into most of the anti-fascist websites, some of which advocate violence, and I got into a past issue of SCHNEWS which, in a review, quoted a passage from a book which explained the best way to make a petrol bomb!
I decided not to draw the staff's attention to this stupid inconsistency though, in case they put even stricter censorship on their computer system.