AND YOU BELIEVE THIS WHY?
Because "its good to be true" and when something is, it is usually false.
I don't agree with Antifa in any way, but I highly doubt they would offer outright support for pedophilia and NAMBLA. Its not even on their agenda; they are concerned about other matters.
I get you dont like Antifa(I don't either), but you still have to exercise some reason when evaluating claims.