It turns out that the Russians have violated Turkish airspace repeatedly - this was the third time in a matter of weeks - and this particular fighter had received 10 warnings prior to the Turks opening fire. That puts Russia pretty clearly in the wrong in the situation. On top of that, Putin claims the Russians are striking Daesh in Syria but they're actually hitting anti-Assad rebels instead, because Putin is pro-Assad. There's at least three factions in Syria right now: Assad's faction, which is anti-rebel and anti-Daesh; Daesh, which is anti-Assad and anti-rebel and consists mostly of non-Syrian Arabs; and the Syrian rebels, who are anti-Assad and anti-Daesh locals. Russia is backing Assad, NATO is backing the rebels, and the Saudis, Qataris, and Kuwaitis are backing Daesh (allegedly).