Not after the trench massacres of WW1, the holocaust of WW2, bomb explosions over Hiroshima and Nagasaki, street violence in modern cities, innocent-looking plastique blowing infants out of airliners. Violence is not new to us. We know all about it. It is one of the prime sources of entertainment. The bloodier the better.
Violence is daily diet in the news.
So that's not the problem. People are used to it and crave it. They turn the dial till they find it, then sit mesmerized as landscape and bodies explode before their eager eyes. That an old man, Abraham, should make ready to kill a young man, Isaac, is minor and mild in comparison. Perhaps it is because Abraham was not a violent man.