(assume this didn't happen in DC, but Oklahoma) What would you do in this scenario, when the the officer is plain clothes and hasn't identified himself?
Video & article below
http://jalopnik.com/5431186/video-snowball-hits-hummer-off+duty-dc-cop-pulls-sidearm?autoplay=true
Video & article below
http://jalopnik.com/5431186/video-snowball-hits-hummer-off+duty-dc-cop-pulls-sidearm?autoplay=true