After the attack on students outside the SNS offices in Novi Sad, he resigned as "objectively responsible". Later, as SNS president, he announced a blockade of the court until the defendants were released from custody, and he portrayed the student protests as an attempted colour revolution. He said the arrest of the dean who had backed the students had nothing to do with the blockades. Following Vučić's announcement, he twice filed criminal complaints against Vučić, over "Jovanjica" and the Belivuk group; both times the prosecutor's office concluded there were no grounds.