Australia didn't have a gun problem. They had a knee-jerk reaction after one incident that had never happened before, and their violent crime rate, including gun violence, is now soaring.

Canada never had a gun problem either. That has more to do with the fact that they are a huge, sparsely populated, ethnically homogeneous nation with a solid economy. 

Colombia?? Okay, this is where I stop reading your insane comments altogether.