[Why is conservation of angular momentum considered a law?](https://physics.stackexchange.com/questions/302487/why-is-conservation-of-angular-momentum-considered-a-law?rq=1)

This one says

> 
> Conservation of angular momentum really is a new phenomenon, one that
> does not follow from the Newtonian mechanics you already know;
> therefore it deserves its own place as a law. Specifically, you have
> proven that
> 
> 
> 

I think it's wrong.

I think conservation of angular momentum does follow from the newtonian mechanics. However, I do not quite understand the derivation either.

So what's going on?

On the other hand, this question, shows how one can derive conservation of angular momentum from Newton 3 laws.

[Deriving Conservation of Angular Momentum from Newton's Laws](https://physics.stackexchange.com/questions/343287/deriving-conservation-of-angular-momentum-from-newtons-laws)

The only exception is when magnetic force create torque in moving charge. However, conservation of angular momentum actually hold because we need to take into account the angular momentum of the whole field.