Yes - but let people decide what they want to play
I do believe games are more violent today, some games can't be played by a normal person due to all the blood and massacres that take place. At the same time, there is a rating scale, and each game lists why it was given that rating. As long as stores aren't selling "M" games to minors, let people decide what they want to buy and play.
Children playing violent games is a completely different story, that's the parents job to monitor and we should not place restrictions on the gaming industry because some parents choose not to do their job.