Worth mentioning: Pavlos Fyssas, the rapper who was "murdered in cold blood" (it looks more likely that his killing happened in the middle of a brawl between two groups of people) was a hardcore antifa far-leftist, and a member of the radical and militant communist organization ANTARSYA (source), that has on multiple occasions used political violence. Here's a statement by them. Some nice parts:

-Open the borders for the refugees

-Asylum, free access to health and education and equal rights for the refugees

-Immediate release of the thousands of refugees from the islands. Immediate closure of refugee (concentration) camps-prisons

-Free and safe transfer of the refugees to mainland Greece, with decent conditions in the cities

-The refugees must be free to travel to any country they want

-Immediate abolition of Dublin II Regulation (basically the EU's legal mechanism for processing refugees and unauthorized entrants into the EU)

-Internationalist solidarity between Greek and Turkish people and other countries in the area

Not saying he deserved to die, but eh, didn't exactly put on my funeral clothes when I heard about it.