Back in my day we didn't have to wear any of that junk and we're all fine.
Well grandpa, nowadays it is illegal to not wear a helmet.
Well son, crime is just a social construct. You don't need to wear a helmet.
Grandpa... we can't just decide that it isn't a crime. What is and is not a crime is determined through social processes.
Well isn't this more of an informal deviance? Society may not share these values but that doesn't make it a crime.
Actually this would be considered a crime since anyone under the age of 18 is legally obligated to wear a helmet. A crime is anything that is breaking the law.
So why can't we decide if this is a crime or not? Why do other people get to decide if we have to wear one?
A crime is also determined by how society reacts to your actions. In this case, I also have to think about how not wearing a helmet is a danger to myself and others.
Well we never needed them. Back then we didn't get hurt riding our bikes.
Haven't you noticed less people being injured on the road ever since we had to wear helmets. There were plenty of moral entrepreneurs pushing for helmet laws.