Male entitlement :Man kills gf and her friend after gf tries to leave him for cheating on her

So a man cheats on you then kills you when you try to leave him for cheating on you. What is wrong with this GENDER?

https://www.youtube.com/watch?v=FKWTC3Ta38E

Someone tried to kill me and herself just because she cheated on me with her ex, her workmate and some other bloke. What’s wrong with this gender?
I think that it’s not a matter of gender mate. It’s the level of stupidity