 On October 26, 2008, he attempted to enter Estonia from Finland, but was detained at the Tallinn Port, where Linderman was informed that he is banned from entering the country and sent back to Finland.In 2009 Linderman became the establisher and leader of the Latvian political party The 13 January Movement.In 2011, he was the co-founder of an NGO called "Mother Tongue" that initiated the unsuccessful constitutional referendum for making Russian a second state language in Latvia.