De or het normschending?

The correct Dutch article is:

de normschending

Rule Words ending in -ing: almost always de. See the rule

How to use normschending

the normschendingde normschending
this normschendingdeze normschending
that normschendingdie normschending
our normschendingonze normschending
your normschendingjouw normschending
every normschendingelke normschending
which normschending?welke normschending?
a big normschending / the big normschendingeen grote normschending, de grote normschending