The gun culture of America is today fully ingrained, deeply embedded into society. It is a religion. No laws can control or change it. We all know what religion can do to the minds of mankind. What can be done though is to cancel all laws on gun control at all levels. Yup. These laws are completely ineffective so why have them. Let it all hang out. Give American what they want - complete freedom on firearms. Let them buy anything. Then just wait for the final outcome. Whatever it is, America deserves it. 

As to Trump's 'pure evil', this is a case of giving a person full power of advanced weapons. Well, give a monkey a gun and it can kill too. America have decided to give its population almost full power of modern advanced firearms. Things happen. And this include giving a guy like Trump full power of state military. Bigger things will happen. Pure evil have happened from previous presidents.