Hillary Clinton approved the sale of hundreds of billions of dollars of weapons to the Middle East as Secretary of State. She was by far the largest arms broker in the world. Many thousands of people are dead because of weapons whose sale she personally signed off on.
Critiques like yours smack of political partisanship. Donald Trump is a certified whacko nut job, no question, but if you were really concerned about normalizing violence, without regard to politics, you would look at Hillary Clinton. Who else could you look at, based on objective criteria?