its regulatory reforms, while remaining in the Eurozone, enabled the government, in the words of Filippa Chatzistavrou, "to better address negative externalities and spillovers between Greece and other EU Member States." By 2019, Syriza had become a mainstream centre-left party, taking advantage of the traditional centre-left PASOK's collapse. Tsipras stated that his goal was to build a broad progressive front without abandoning the party's core ideology and left-wing coalition. During the party's time in government, SYRIZA has practised a soft neoliberal policy of austerity, despite its vocal anti-neoliberalism, which contradicted its pre-electoral pledges, ideological outlook, political practice, and its own history, being stuck in populist rhetoric and what are termed "symbolic politics", unable to preserve its radicalism. Observers' analysis has revealed similarities with the previous PASOK governments, in particular the party's outlook from 1974 to 1981. Group of 53 The Group of 53, also known as 53+, are a faction within Syriza. The group was founded in mid-2014 and stands ideologically between the Left Platform and Tsipras's core backers. Both Euclid Tsakalotos and Gabriel Sakellaridis are members of the group. Another member of the group was Tassos Koronakis, the former secretary of the Syriza Central Committee who resigned following the announcement of the snap elections in September 2015. Left Platform The Left Platform were a faction within Syriza, positioned ideologically on the far-left of the party. In August 2015, 25 Left Platform MPs within Syriza left the party and formed Popular Unity to contest the snap elections. The grouping was led by former energy minister Panagiotis Lafazanis. Former constituent parties Syriza as a unitary party was formed through the merger of the following parties (in English alphabetical order): The party also includes a number of independent leftist activists. After the creation of the unitary party in 2013 some of the constituent members decided to dissolve, such as Synaspismos, Renewing Communist Ecological Left, Ecosocialists of Greece and Unitary Movement. After the third Memorandum of Understanding with the European Stability Mechanism was accepted in 2015, organizations like Internationalist Workers' Left, Active Citizens, New Fighter, Democratic Social Movement, Anticapitalist Political Group and the Communist Tendency (Greek section of IMT) joined the Left Platform to create Popular Unity. The Communist Organization of Greece also left Syriza at that time. Criticism The party has been criticized for the way it approaches far-left terrorism in Greece. Thodoris Dritsas, a member of SYRIZA and ex-minister, drew criticism