Original sentence: Changes in the Croatian constitution left Serbs  unhappy about the prospect of living in an independent Croatia, fearing a re-run of the anti-Serb persecutions of the Second World War-era Independent State of Croatia.On May 1, 1991, paramilitaries associated with the Serbian Radical Party killed a number of Croatian policemen in the Borovo Selo massacre and mutilated their bodies.Resistence from members of the Croatian population within these zones led to the first Croats being expelled from the region.The insurrection spread to the eastern region of Slavonia in early 1991, when paramilitary groups from Serbia itself took up positions in the region.These sentiments were fueled by local Serb polititians like Jovan Rašković, Milan Martić, Milan Babić and by the Belgrade regime
Edited sentence: Many Serbs were deeply unhappy about the prospect of living in an independent Croatia, fearing a re-run of the anti-Serb persecutions of the Second World War-era Independent State of Croatia.On 1 May 1991, paramilitaries associated with the Serbian Radical Party killed a number of Croatian policemen in the Borovo Selo massacre and mutilated their bodies.The insurrection spread to the eastern region of Slavonia in early 1991, when paramilitary groups from Serbia itself took up positions in the region and started to expel non-Serbs from the area.These sentiments were fueled by local Serb nationalists like Jovan Rašković, Milan Martić, Milan Babić and by propaganda coming from Milošević's Belgrade regime