The demons are always disturbing. Their business is to nullify the existence of God. Therefore they're always disturbing. If there is a certain class of citizens, if they are simply after agitation that "This government is useless," that means they are disturbing.
There are so many parties, they make agitation, "Oh, this government is nothing. We require a new government." Therefore in your country the Communist movement has been statewise declared, "It is illegal." But in other countries the Communist group will always decrying, "Oh, this government is nonsense. This government nonsense."
As the Communist Party is always disturbing to the government, similarly the demons, the atheist class of men, they're always disturbing to God. How they can gain the benediction from God? They simply disturb Him. And there are different kinds of demons, different class of demons. That is explained in the Bhagavad-gītā. Duṣkṛtinaḥ (BG 7.15). Duṣkṛtina means . . . krti means very intelligent, and . . . what is that word, if a man does something wonderful? Genius? Genius? Yes. So the genius, duṣkṛtina, "Wrong genius." That means the materialistic persons, scientists, they're genius. They have discovered very wonderful machine, wonderful things. They are genius—but duṣkṛtina: not for the welfare of the human's society but for condemning the human society.