De or het marxist-leninist?

The correct Dutch article is:

de marxist-leninist

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

How to use marxist-leninist

the marxist-leninistde marxist-leninist
this marxist-leninistdeze marxist-leninist
that marxist-leninistdie marxist-leninist
our marxist-leninistonze marxist-leninist
your marxist-leninistjouw marxist-leninist
every marxist-leninistelke marxist-leninist
which marxist-leninist?welke marxist-leninist?
a big marxist-leninist / the big marxist-leninisteen grote marxist-leninist, de grote marxist-leninist