:: Ok. I will rewrite the problematic part here. Please tell me if this is ok. 
 ''According to VANU, VANU came into conflict with ultra-nationalistic organisations which identities remained unknown, some members even received letters of death threats from self-proclaimed "patriotic" groups in Serbia (most of the public suspects right-wing criminal groups. <-> SANU went even supporting this organisations. A few members of the Serbian academy of sciences and art openly supported this "patriotic" forces. <-> this sentence would be removed because indeed it can be perceived as POV pushing. Is this version ok?