In "The Crime of The Communist" by G. K. Chesterton, there is a conversation between many persons about the communism:
‘Well, you’re all very down on Communism, of course,’ said the Master, with a sigh. ‘But do you really think there’s so much of it to be down on? Are any of your heresies really big enough to be dangerous?’
‘I think they have grown so big,’ said Father Brown gravely, ‘that in some circles they are already taken for granted. They are actually unconscious. That is, without conscience.’
I don't get the whole meaning of this two quotes, especially the bolded phrases?
Does the first phrase mean "there’s so much of it that deserve to be down on"?
And the second one mean "They are actually unconscious. That is, without conscience"?