Oakland is pretty different from San Francisco though, it's on the list of highest number of crimes in the US: https://en.wikipedia.org/wiki/List_of_United_States_cities_b...
I will also add that I rarely report crime. This is somewhat learned helplessness as I do not expect any results. For example, calling Oakland's non-emergency number has resulted in me eventually giving up after getting nothing but a busy signal over and over. I was attacked by one of San Francisco's street addicts, but as I did not suffer any serious injuries, I did not waste my time reporting it. (I regret this on principle as surely that person has attacked others and will continue to do so.) I also do not report the obvious dealers hanging out on corners by our offices because I know from following the local (Tenderloin) police force's Twitter account that even if they make the arrest, the dealer will be released within weeks (possibly hours or days; not sure) back onto the streets. It is common for them to arrest the same dealers three times in two-month periods. (And no, they aren’t pot dealers; they are arrested with meth, crack, heroin, and other hard drugs ready for sale.)