More background on Oakland: https://www.sfgate.com/politics/article/Oakland-PD-s-Harleys-have-a-new-roar-3281220.php https://www.sfgate.com/politics/article/Oak

More background on Oakland: https://www.sfgate.com/politics/article/Oakland-PD-s-Harleys-have-a-new-roar-3281220.php https://www.sfgate.com/politics/article/Oakland-PD-s-Harleys...