Why are you getting angry? I twist nothing. The shooter is NEITHER right NOR wrong in any case. Are you unable or unwilling to understand this? You needn't suppose my statement to condone what you determine to be the more unpopular choice to soapbox on behalf of your opinion.
This debate also serves as example - your opinion is right in your mind while mine is right in mine. However, while both are right, neither is right. Conversely, neither is wrong. Therefore, neither is truth.
Humans are just self-glorified animals and morality IS MADE UP. If it weren't then even the previously mentioned dog would behave differently. You are not born moral or ethical, perhaps not even sympathetic or empathetic. You are instructed on socially acceptable conduct.
And no, "we" have no "right" to tell other countries, or our neighbors for that matter, anything. And yes, different cultures, clans, sects, tribes, families, etc., of people have differing, sometimes opposing, values and socially acceptable norms that were DEVELOPED according to their unique needs or environments. None is more right or wrong.
To some, George Washington was a patriot, to others, a traitor. Who is right? The correct answer is both AND neither. It just depends on your thinking.
Any person that is inclined and able to take what is mine is going to take it regardless of anyone else's thoughts on the matter. If your view of morality, emboldened by crafted laws, is accurate, then why need we the laws? Why would people do bad things? Because they don't think their conduct wrong, they just know it is not tolerated within the community.
Now I'm rambling. I'm not your enemy. I'm just the regular feller that gave you an answer to your query.