Murder rate in U.S. lowest since 1900 in 2025 (study by Council on Criminal Justice). Karoline Leavitt linked decline to Trump's crime crackdown (mobilized federal law enforcement). FBI reported 100% rise in violent arrests (2025 vs. 2024), disrupted 1,800 gangs. 21% drop in homicide rate in 35 U.S. cities (largest one-year decline)