L. L. Zamenhof his honour. In 1959, Unesco honoured Zamenhof in the occasion of his centenary. In 2015 Unesco decided to support the celebration of the 100th anniversary of the death of Ludwik Zamenhof. Zamenhof was 12 times nominated for the Nobel Peace Prize. His birthday, 15 December, is celebrated annually as Zamenhof Day by users of Esperanto. On 15 December 2009, Esperanto's green-starred flag flew on the Google search web page, in a commemorative Google Doodle to mark Zamenhof's 150th birthday. The house of the Zamenhof family, dedicated to Ludwik Zamenhof, and the Białystok Esperanto Centre, are sites of the Jewish Heritage
Ludwik Dorn conflict with the Prime Minister Jarosław Kaczyński. Elected a Marshal of the Sejm on 27 April 2007, with 235 votes, after Marek Jurek's resignation. On 4 November 2011 he, along with 15 other supporters of the dismissed PiS MEP Zbigniew Ziobro, left Law and Justice on ideological grounds to form a breakaway group, United Poland. Graduated with a degree in sociology from Warsaw University in 1978. Ludwik Dorn Ludwik Dorn (, born 5 June 1954 in Warsaw) is a Polish conservative politician, former Deputy Prime Minister and member of Sejm elected on 5 November 2007. He was born Ludwik Dornbaum,