The death threat posted on Facebook reads as follows.
"I am calling on all patriots to put an end to this madman and hater of everything that is not Serbian. He needs to be killed! Brothers, if this Serb-Chetnik ever enters our homeland again, strike!"
The user's profile also contains an image of the coat of arms of the NDH - the Independent State of Croatia, a WW2-era Nazi-allied entity ruled by the Ustasha regime, who operated death camps for Serbs, Jews and Roma - a slogan reading "Black legion - for home ready" (Ustasha greeting), and photographs of Ante Pavelic and other NDH Ustasha leaders.
Commenting on this latest threat, Vulin said the situation was "nothing new."
"Not a day goes by that I don't receive a death threat. Usually it's (from) members of fascist formations, Ustashas, the KLA ("Kosovo Liberation Army"), often criminals feel called out because I speak about pillaging privatizations," he told TV Most.
Vulin said he receives these threats via social networks, but also in the form of text messages sent to his phone.
"As long as I don't think my family is in danger, I don't report the threats. I try to live my life and I don't want to get political promotion out of it," Vulin said.