[ought-six]

No one is disputing there were extremists in the ranks; the topic was INFESTATION, which implies great numbers; numbers enough to harm and adversely affect the host. There was no such INFESTATION.

[Steve Van Doorn]

Minister of Internal Affairs isn't simply "ranks"
They run the national guard, police, emergency services, Border guards and special task forces and work with many agencies. He can decide whom to hire. I would call that infiltrated agencies.