Porqué permite Dios tanta injusticia?

Porqué permite Dios tanta injusticia?
 

Why does God permit so much injustice? Is it ok?

yes
Instead of using so much injustice you can use such injustice especially when you are referring to one particular horrible incident.

and so many injustices ?

That works, too.

You can also use allow instead of permit.

Thanks guys !