First, the criteria for someone owning one should not be need. This is the question i hear all the time "But why do you NEED one of (fill in the blank)." I don't have to justify need.
As to your second point, they do look to the wrong place to fix things. Intentionally I believe. If and when this "assault weapon" ban goes through, it will do NO good. BUT, there will be a longer list of items that Americans can no longer own. Then there WILL be another tragedy. And it will start all over again. The cry for more "common sense" gun laws. The process repeats over and over again until the 2nd amendment no longer exists. They don't want to solve the problem. They want to disarm the people. One tragedy at a time. Incrementalism as Road Kill calls it.