Beheading of a Soldier by a Russian Nazi

How can they do this? I can't believe people would do this..
WARNING: DON'T WATCH THIS VIDEO IF YOUR NOT 18 AND OVER
DON'T WATCH THIS VIDEO IF YOU CAN'T STAND SICK STUFF ..
It may cause you to
Vomiting , loss of appetite, rage, sadness,

I'm not responsible for your action after this video
Extreme viewer discretion is advised!