The moment they're willing to learn is the moment they're not a liberal. For as long as they claim to be or are in fact a liberal, they either cannot know what the world is like or they know and don't care. Those in the latter category are dangerous, period. Those in the former category, however well meaning they might be, are dangerous until they're willing to accept that they cannot remain a liberal and be, as you put it, considered safe.
I'm more or less in agreement with you.
The moment they're willing to learn is the moment they're not a liberal. For as long as they claim to be or are in fact a liberal, they either cannot know what the world is like or they know and don't care. Those in the latter category are dangerous, period. Those in the former category, however well meaning they might be, are dangerous until they're willing to accept that they cannot remain a liberal and be, as you put it, considered safe.