The toddler must say no in order to find out who she is. The adolescent says no to assert who she is not.
Adolescence is the conjugator of childhood and adulthood.
I progressed through so many different styles of music through my teen years...
Perhaps travel cannot prevent bigotry but by demonstrating that all peoples cry laugh eat worry and die it can introduce the idea that if we try and understand each other we may even become friends.