Shorting a stock, then going on CNBC and explaining why you shorted it, possibly catalyzing a profitable selloff: totally legit. Buying $300 worth of stock and

Shorting a stock, then going on CNBC and explaining why you shorted it, possibly catalyzing a profitable selloff: totally legit. Buying $300 worth of stock and then posting a rocket emoji on a message board: an assault on the basic foundations of capitalism.