On December 26, 2016, Pernar expressed his doubts on the Berlin terrorist attack in a Facebook post. In his post, he shared a video by Gerhard Wisnewski which claimed that there were no proven victims or evidence of the attack. Pernar subsequently claimed that he deliberately published ""de facto" fake news" to see if his post would be covered more by Croatian publications "Index.hr" and "Telegram" than the affairs surrounding Ivo Sanader and the arbitration of Tomislav Karamarko.