Alex Pretti definitely had the right to carry, per whatever permit he had (though not having ID and his permit with him violated MN law, probably just an infraction, not even a misdemeanor) and take video of what ICE and "protesters" were doing, to his heart's content. Where he violated Federal law and went beyond his 2A rights was interfering with enforcement of Federal law and engaging in the violent resistance that led to his being shot and killed. Pretti initiated and drove that fatal chain of progression.