Arran, which describes itself as supporting ‘independence, socialism and feminism’ on its website, has said its members will sleep in the library until their demands are met, reported Catalan daily La Vanguardia on Wednesday.
Around 25 group members have occupied the library, located in the Casino, a modernist building in the Catalonian town of Manresa, sleeping in the building on Monday and Tuesday night to "put pressure on Manresa local council".
They have been protesting with banners reading: "We want longer opening hours for studying!"
Nil Saladich, a spokesperson for the group said: "We will continue to occupy until we have accomplished our objective."
On Thursday the group will petition the local council to lengthen the library’s opening hours, especially on Monday mornings and during lunchtimes. They also want the library to open a study room during exam periods.
The library is the only one in the town centre and is currently closed on Monday mornings as well as daily between 2pm and 4.30pm