The violence isn't excessive. It's just not neutered or censored. If an unbalanced guy became a 'super' hero and tried to take on a bunch of heavily armed drug dealers, this is exactly what would happen. Frank is a 'good guy with a gun', and not only the 'bad' people pay the price. But even if his methods are misguided, his unwavering moral compass is somewhat admirable, though it could do with a bit of nuance. Gunn, Wilson and Page are on fire.