22 yr old woman stabbed over $20 & facebook arguments? Really?

This is insane. 22yr old young woman stabbed & killed by her boyfriends sister over $20? This is insanity. Arguing on facebook that lead to the stabbing. C'mon yall Really? Really? This gotta stop.
This is something I feel really strongly about. Its almost as if people dont see tomorrow or the consequences of their actions. They dont see the persons family crying because you killed them over something so petty. They dont see their family crying & hurting because you're now in jail for killing some 1 over something so petty. They dont even imagine their own self being feeling sorrow & guilt & living the rest of your life knowing you killed some one over something so petty. People have to think about afterward. Whats going to happen after you kill this person, shoot this person, act crazy & fight this person? Over nonsense youre ruining your life & the life of every one involved in this crap. We gotta wake up people.