Obradovic was born on 23 August 1976 in Vranic, Cacak, SFR Yugoslavia.He studied philology in the University of Belgrade, where he graduated in 2002 after writing his thesis titled “Milos Crnjanski and the New Nationalism”. In 1999, he and some of his classmates started their own publication, Dveri Srpske. Obradovic became the leader of (Gates) Dveri on 25 June 2015. In207 he was a presidental candidate and gain 83 000 votes 2.25%
After becoming as MP in 2016, Obradovic also led the 2018–19 mass protests as the head of the entire opposition. He is also a pro-AfD figure, of far-right background. In addition to the one-time pro-Hitler Orthodox priest Velimirovic, another personal hero is an antisemitic, fascist ideologue from the same period, namely Dimitrije Ljotic — a follower of the French protofascist and Action Française ideologue Charles Maurras.
Obradovic himself has been visiting the AfD since at least 2017, when he met leading AfD figure Jörg Meuthen during a visit to the parliament of Baden-Württemberg, where the AfD won 15 percent of the vote in 2017. Obradovic introduced himself as coming from the “Serbian AfD” and discussed their common ideas. Meuthen and Obradovic were on the same page on family values and their “fight against the Brussels commissioners,” as well as on border protection and the migrant crisis.