De or het non-discriminatie?

The correct Dutch article is:

de non-discriminatie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use non-discriminatie

the non-discriminatiede non-discriminatie
this non-discriminatiedeze non-discriminatie
that non-discriminatiedie non-discriminatie
our non-discriminatieonze non-discriminatie
your non-discriminatiejouw non-discriminatie
every non-discriminatieelke non-discriminatie
which non-discriminatie?welke non-discriminatie?
a big non-discriminatie / the big non-discriminatieeen grote non-discriminatie, de grote non-discriminatie