The former is allowed as stated (learning is not prohibited, so long as it's not involving active violence) in the U.S., the latter is not as it involves a phy

The former is allowed as stated (learning is not prohibited, so long as it's not involving active violence) in the U.S., the latter is not as it involves a physical and imminent threat. But that's not an act of speech, that's an act of violence. Anyways, sure, you will find exceptions to any rule if you look hard enough or strain the definition hard enough. Not really particularly interesting though.