is a vigil yil planned friday evening on the football field, parents weary of what feels like unrelentdingolence. >> there is no value put only. every day you read about something, hearing about something where taking someone's life seems to be the most immediate, simple way to address a problem. >> it was shocking. very tragic. i heard he was a great guy. i didn't -- i didn't know what to think. >> people have been saying on twitter, facebook. people posting pictures. and he was a good person. >> students here saying they have no idea why woe have been in san francisco on saturday night. also, police are?÷b> revealing very few details about this case and they are asking for help in solving this murder. >> so sad. thank you. >> the police chiefs of oakland ask san francisco calling a weekend gun buy back a small victory in the face of the rampage. the buy back took 600 guns off the street. 300 in oakland, 300 in san francisco. held on saturday nights just hours after the nas masa ker. >> we want to continue partnership in these groups on the heels of what took place friday shows the commun