Why God allows children etc, to suffer, die at the hands of others?

What do I tell a person who asks if there is a GOD, why does he allow children etc, to suffer, die at the hands of others?

There is a reason for everything…God is in control, but i am very sure God is not the reason for any bad things happening

God is love, when we suffer by the Evil people God also suffers with us, but there is Judgement for all things…that is Our Hope

it is very hard to answer. i think we shold comfort them more, then we can explain to them God is kind and sin is ever can live with God. In addition, human has their own freedom, God respect them. Howver, God is beyond the tragedy. God can give more light and totally change the dark world.

This is not what God willing to see. It is better to explain the sin of human first; and God is also suffered from human’s sin.