Sonic offers both streaming technology and a library of 20, 000 licensed movie titles.

FORBES: Redbox Needs To Move At Sonic Speed To Catch Netflix

The group were still at the library at 20:00 GMT and it is believed they intend to remain overnight.

BBC: Protesters stage sit-in at Levenshulme Library

The number of full-time library workers is down 20% from the end of 2008, when there were more than 1, 000 positions, as Harvard centralizes functions such as preservation instead of handling them separately at each library.

WSJ: Economy Forces Harvard to Tighten Its Belt