defined as follows: "In emphasising the importance of individual liberty and personal responsibility with respects to all matters, libertarians argued that the only thing that may legtimately be demanded of others is non-interference. Hence, libertarians oppose state intervention to help individuals achieve self-realisation (e.g. through welfare measures) or to protect them from themselves (e.g. through legislation against the sale and use of drugs). And on the same grounds they staunchly support private property and unregulated markets." The RI claims the legacy of Risorgimento radical-republican figures such as Carlo Cattaneo, Giuseppe Mazzini, and Felice Cavallotti, and 19th-century liberal and socialist intellectuals as Gaetano Salvemini, the brothers Carlo and Nello Rosselli, Benedetto Croce, and party-ideologue Ernesto Rossi. Internationally, the RI political though is influenced by ideas of Martin Luther King Jr., Mahatma Gandhi, Immanuel Kant and Karl Popper. The Radicals have long adopted referendums to bring political changes. Since 1974, the Radical Party and its successor RI had purposed more than 110 referendums and were successful 35 times. Other political methods have included Gandhi-inspired nonviolence, the Satyagraha, also adopting extreme tactics like hunger strike and, occasionally, thirst strike. Pannella became involved in nonviolence after a long-time association with Aldo Capitini, a pacifist activist nicknamed the "Italian Gandhi". On fiscal issues, the RI is usually liberal, supporting non-interventionist and free-market policies, but in recent times accepted part of the welfare state system, especially on healthcare. The RI is divided in two wings, i.e. the Friedmanians, who are influenced by Milton Friedman and the Chicago School, and the Keynesians, who support neo-Keynesian or post-Keynesian economics. This divide declined in the 2010s, when it adopted moderate liberal trends on economy. On social issues, the RI appears as the most progressive party in Italy. The RI fully supports progressive stances including same-sex marriage, LGBT adoption, abortion, artificial insemination and euthanasia, vocally advocating for an advance healthcare directive (AHD). On healthcare, the RI support universal healthcare with possibility to choose between state-managed service and private insurances. The RI also calls for the legalization of prostitution and cannabis while enforcing the fight against hard drugs like heroin with harm reduction methods. On immigration, the RI supports ius soli policy and faster legal integration of regular immigrants, granting them citizenship and the right to vote. The RI criticises sentiment against illegal immigrants, rejecting the "invasion" theory supported by far-rightists. On religious affairs, the RI follows the historical Radical Party's