of official data, it appears that about 50,000 buildings all over the country are unused or abandoned and thus subject to squatting. Squatting has no legal basis, but many squats are used as social centres. The first occupations of abandoned buildings began in 1968 with the left-wing movements Lotta Continua and Potere Operaio. Out of the breakup of these two movements was born Autonomia Operaia, which was composed of a Marxist–Leninist and Maoist wing and also an anarchist and more libertarian one. These squats had Marxist-Leninist (but also Stalinist and Maoist) ideals and came from the left wing of Autonomia. The militants of the Italian armed struggle (the New Red Brigades) were connected to these squats. There are many left-wing self-organised occupied projects across Italy such as Cascina Torchiera and Centro Sociale Leoncavallo in Milan and Forte Prenestino in Rome. In Rome there is also a far-right social centre, Casa Pound. This situation has so far received the approval of Italian courts, which have been reluctant to defend the owners' rights. In contrast with the dominant jurisprudence, new case-law (from the Rome Tribunal and the Supreme Court of Cassation) instructs the government to pay damages in case of squatting if the institutions have failed to prevent it. Netherlands The Dutch use the term krakers to refer to people who squat houses with the aim of living in them (as opposed to people who break into buildings for the purpose of vandalism or theft). Notable squats in cities around the country include ACU and Moira in Utrecht, the Poortgebouw in Rotterdam, OCCII, OT301 and Vrankrijk in Amsterdam, the Grote Broek in Nijmegen, Vrijplaats Koppenhinksteeg in Leiden, De Vloek in The Hague and the Landbouwbelang in Maastricht. Land squats include Ruigoord and Fort Pannerden. On 1 June 2010, squatting in the Netherlands became illegal and punishable when a decree was sent out that the squatting ban would be enforced from 1 October. Following legal challenges, on October 28, 2011, the Supreme Court of the Netherlands decided that the eviction of a squat can only occur after an intervention of a judge. The Dutch government assessed the effectiveness of the new law in 2015, releasing a report giving statistics on arrests and convictions between October 2010 and December 2014. During this time period, 529 people have been arrested for the act of occupying derelict buildings in 213 separate incidents. Of the 529 arrests,