visible blast from a gun. they returned fire and later caught an 18-year-old an recovered two weapons. it's possible that they inadvertently drove into a gang shooting, but that remains under investigation and the city-wide manhunt continues. >> william la jeunesse, very busy in los angeles right now. thank you, william. it's still far below historic highs. the national law enforcement officers memorial fund reports 50 police officers died in gun violence this year. last year the number was 32. when you include all deaths in the hineline of duty 126 officers were killed, their average age 41 years old. thousands of people protesting in moscow right outside the kremlin. ahead, what has them so upset.