I've lived in the 650 pretty much all my life and anyone goin around saying its grimey is hella falsified. There are a handful of dirty neighborhoods but people aren't getting killed at the rate it goes down in a real grimey spot in the bay area. Its like people want that shit to be bad cuz they think the shit is cool. There is a crime statistics website somewhere I used to look at to determine the best places to live and what not and every city in the west and south bay compared to national averages had a big smiley face next to it indicating its below the national average only thing that would be at or below would be like car theft and shit like that, violent crime is pretty tame for the most part