From a general standpoint, this trailer was, well, to be blunt, disgusting. Debates over the influence of video game violence stem from the actions of several real life mass murderers, and here we have a game centering around a character that perpetuates the very actions and mindset of the people who have made these controversies so prominent.
A lot of people here are quick to call others hypocrites because violence exists in many popular mainstream titles like GTA and CoD, but this is very different. One game's entire game design revolves around giving the player liberties to do what they want--this includes OPTIONALLY killing innocent people--while roleplaying as a gangster trying to unethically rise to the top by murdering enemies and stealing. The other game is a war simulator pitting players against terrorists who threaten their land. Hatred's entire premise is murdering innocent people who PLEAD for their lives for no reason besides the typical philosophical perspective of your average psychopath; its story is about a mass murderer who desires the genocide of the human race. Surely people can see the difference. In the end of the day, violence is violence, but not being able to spot the discrepancies here is like comparing an American soldier to Adam Lanza... which I'm sure many cynical people here will do.
From a game design point of view, the game looks very uninspired. Replace humans with zombies, and its just your typical zombie shooter. Its entire selling point is its shock value, unfortunately.