Neither,Thats a Shoei helmet, to remove the sheild you have to lift it all the way up and pull down on the lever on the left side.The piece you broke is just used to crack it open a little,
When i grew up if you road your dirt bike on the street and ran from the cops and they did catch you they just made you push your bike home,All the good old days.
All of those roads are good,Those roads down there are so much cleaner and not as rough,plus the lack of berm gravel is a blg plus...If it is your first time you will love it!