Australia banned automatic rifles after several mass shootings and since then, they have had none.
TSA banned liquids and gels in more than small quantities, and since then, there have been no incidents of liquid-based explosions on US aircraft.
Modded "Funny"? This is why more and more children will get murdered in their schools in the USA.
Australia banned weapons that make it easy to kill lots of people in a very short while after they had been used to do so.
The TSA (again, using the same rigourous logic as the parent) bans liquids that have never ever been used, as far as anyone is able to tell, in a terror attack.
If you're a certain type of American, you may not see the difference in the two situations. Other Americans, and the rest of the world, can only watch in horror as children get murdered.