The debate is for should it be against the law to not wear a bicycle helmet.
Some people think that it should be mandatory to wear them because they protect your head and it might save your life. Some people won't like this if it becomes a law because helmets can be uncomfortable and some police officers might not really do anything to enforce this law. I think wearing bike helmets should be mandatory because they have been proven to save lives. But the bad thing is it seems uncool in the city and you are cooler without wearing a helmet but it would save your life if you're in a bike crash but in a car and bike crash it wouldn't do much. If it was mandatory and everyone wore one it might not seem uncool. So I think bike helmets should be mandatory.