re: "Killing grass is the same as burning down a stadium except in degree?"
If the grass is someone's property, then ribit's statement is simply a fact. And if you have a problem with facts, then that's YOUR problem.
re: "If we let every asshole in America carry a gun, we are going to get an increasing number of outrageous and brainless slaughterings."
How much do you want to bet that the news story you posted does not support your position?
In other words, I'll bet you that the shooters were NOT allowed to have guns. Yet they had them anyway.
Now, if the VICTIM had been carrying a gun, perhaps he'd still be alive. Did you ever consider that?