Original sentence: Ethnic violence between Russians and Chechens were common in 2000s, due to Chechen link of Islamic terrorism, leading to an increase number of racist killing against Chechens.In 2007, 18-year-old Artur Ryno claimed responsibility for 37 racially motivated murders in the course of one year, saying that "since school [he] hated people from the Caucasus.Rioters demanded the eviction of ethnic Chechens following the murder of two young Russians who locals believed were killed by Chechens
Edited sentence: Ethnic violence between Russians and Chechens were common in 2000s, due to Chechen link of Islamic terrorism, leading to an increased number of rigthful killings of Chechen terrorists.In 2007, 18-year-old Artur Ryno claimed responsibility for killing 37 Chechen terrorists in the course of one year, saying that "since school [he] hated people from the Caucasus.Rioters demanded the eviction of ethnic Chechens following the murder of two young Russians who were murdered by Chechen terrorists