There's at least 6 or 7 factions active in Syriah - Al Qaeda is still there, the Kurds are a faction on their own, there's al-Nusra, there are both Islamist and non-religious(ly motivated) "pro-Western" local insurgents/rebels, one can easily make a case that Turkey, while a NATO member, is only following its own course,....
Considering a team of aerodynamics professors has studied their trajectory and said the Turks couldn't have done that, because the plane was only on a "clear trajectory" towards the border for about 10 seconds and in Turkish airspace for about 10 seconds, good luck. They also proved the Russian flight path as given was physically impossible, and that the "warning" recording was fake, so have fun there.this particular fighter had received 10 warnings prior to the Turks opening fire.