The difference between your photo of Israelis is that the women in this picture are probably serving their term in the military and have issued rifles.
Additionally they don't have magazines in the magazine wells of their weapons.
While the JC Penny yahoo attention seeking asshat from the photographs I've seen actually did have one in his weapon. And likely he's not in the military while pulling the attention seeking stunt.
Bystanders have no way of knowing if there are rounds in the magazine or not.
As another poster stated apple to oranges. Only the disingenuous or those truly incapable of critical thinking would think those two examples are even remotely similar...
I'm sorry I must've missed the point where the U.S. is less than 100 years old shares borders with hostile nation-states who collectively have higher populations than a measly 400 million and needs military aid from an allies to help keep its borders intact.
Better watch out for those islamo-facist Canadians