What is your problem?
These are two separate issues.
1. Disrespect of hunting and trespassing laws.
2. Cold-blooded murder of six people.
I agree with you that #1 should be dealt with, but it's NOT THE IMPORTANT ISSUE here. #2 is the issue. Don't use #2 as an excuse to crack down on #1.
If I read the news correctly, the killer was trespassing on private property at the time he opened fire. Seems to me cold-blooded murder wouldn't have taken place if he'd been on public, not private, land, as the law dictates.
So from the specific (wanton murder) one can progress to the general. I don't know the full background of this particular case: there's probably a lot about it yet to be revealed. But the Hmong and certain other groups were plucked from their native homes for political reasons and dumped in selected spots around the U.S. where they remain in tight-knit communities refusing to assimilate. A recurring problem seems to be their general refusal to respect American laws and customs. Maybe curing that problem might help cure the others. Simple enough?
When people are allowed to disregard laws for a period of time, they think they have a 'right' to disregard said laws. We all know how 'the man' oppresses minorities. The media and politicians tell us this every chance they get. When they are called on these transgressions they fight back to protect their 'rights' by any means necessary.
Sound familiar?