Walk from 12th St Bart to Jack London Square, safe?

I once got off at the wrong station on a Sunday and realized it once I got off the train.. Walked to the Police Station and asked the guy behind the desk who happened to be a guy I know.. (small world).. we chatted and I told him what I did.. he told me I was crazy to walk.. to basically the same location.. and got me a ride from a coworker to my destination.. That was 9 years ago.. Sure things are still the same..