National Socialists – Left of the 21st century

The National Socialists – Left of the 21st century (Národní socialisté – levice 21. století, NÁR.SOC.) also known as Left 21 (Levice 21, LEV 21) was a left-wing political party in the Czech Republic founded in October 2011 by Jiří Paroubek, former Prime Minister and former leader of the Czech Social Democratic Party (ČSSD).

Former Prime Minister Jiří Paroubek was elected chairman of his newly founded party at the constituent congress on 26 November. In the year 2012, the party had two representatives in the 200-seat Chamber of Deputies, Paroubek and Jiří Šlégr (ex-ČSSD).

The party name was a reference to the historical Czech National Social Party, and as such they did not advocate for Nazism. NÁR.SOC. wanted to follow up the tradition of the socialist nationalists in the First Czechoslovak Republic. Nevertheless, in the 2017 Czech legislative election, LEV 21 allied with the Czech Neo-Nazi party, Workers' Party of Social Justice.