Mayor Turnball event started
http://i.imgur.com/DiZSB6C.jpg?1
http://i.imgur.com/BaMZDte.jpg?1
Note that the "defeat the boss 20 times for grand prize" is a lie.
Edit: Defeat Mayor Turnball 20 times to receive the ECPD Riot Gear (540/832).
http://img836.imageshack.us/img836/729/3yo.png
Defeat Mayor Turnball 30 times to receive the Weekend Ride (2515/2059).
http://img199.imageshack.us/img199/5818/yw6.png
Defeat Mayor Turnball 50 times to receive the Mayor's Revenge (5202/2802).
http://img600.imageshack.us/img600/5474/u8a7.png
Previous three screenshots courtesy of c00guy.