It's bloody scary, that's what it is.
But I have to add this - to that man who killed his own daughter because she didn't want to go into an arranged marriage and also because she adopted the western ways - what did you expect when you moved over here?
I'm chinese and my parents moved over here with my grandparents when they were very young, however I'm 28 now and have never had my religion (Bhuddism) forced on me. Because when I was growing up, I was made aware of all the other religions around me, I grew to understand and accept everyone for who they are.
Honour killings come from bringing shame to one's family by doing something that contradicts their way of life and/or beliefs. That young girl was killed for simply choosing her western way of life over her father's.
If 1st generation parents do not want their children to adopt these ways, then they can do one simple thing. Not move to the West in the first place.