Conceptual drawing - Man vs Society

Crit today with Joshua Tree's conceptual drawing brief.

My drawing is inspired by a news happened in China recently. A two-year-old girl was crashed by 2 cars respectively, the whole thing happened in 6 mins and there are 18 people walked pass by, but no one helps the little girl. This news cause a great sensation in China. People start to discuss how come people can be so cold-blooded. And I start to think about it as well.I think people are kindhearted actually, in certain case. However China always have some street deception, and people learn from failure, learn from what they experienced, and they start to build a wall to protect themselves. There's no right or wrong for people to build a wall, but now when the accident happened, those 18 person was blamed by others, because this wall can protect them from hurt, at the same time become the weapon of killing the 2 year-old girl. The onion I draw represent the wall we build, as to protect the inside target, and the wall itself is the weapon, since onion can makes people cried as well.

Many feedback is questioning why I chop the paper, actually to be honest, I don't know why. I know it's a bit funny and irresponsible to have this answer, but this is the truth. If I really need to give a reason for it, it might because I want people to know that is the inside of the onion, and I don't want to draw a knife. What they suggest is perhaps I need to decide the chop position.