A person has a right to practice their own religion. Not that I'm defending what this man did, it was horrible and pointless, but preventing someone from practicing their religion is wrong (honor killings are not part of a religion). Every country has it's criminals and, while it's unfortunate that something like this had to happen in the states, that's no reason to go on a tirade against cultural diversity. That would be like buying a bag of apples and then throwing away the whole bag just because one of them was rotten.
:/
The misdemeanors of one person from another country are no reason to suspect or mistreat a person from that same country.
Besides, if you go around preventing people from being who they are and keeping their own culture eventually they're going to get pissed off, and the backlash from thousands of repressed immigrants and foreigners could be a real possibility and it wouldn't be pretty.
That's the way I see things anyways.
<3