I still haven't read this entire thread, and based on the lack of facts, lack of logic, and outright wrong information, I don't think I will.
But this is yet another post that just isn't accurate.
I suggest looking at the murder rate after Australia "banned" (which isn't correct, because guns aren't really banned there) long guns and then handguns. Look at the murder rate before the act was passed. Look at the number of mass shootings before the act was passed. Look at the number of mass shootings since (hint: there have been 0 in the 20+ years since the act, yet they had averaged nearly 1 per year in the previous 20 years).