My son

On Monday Night.
My son, waiting and tell me. "Mom! Can go to school with me? ".
I asked him that "What 's the happen?".
My son said, "I'm fear."
I asked him to that "What is your fear?".
He told me that "My friends locked bathroom door I can not come out."
"I scared and crying but have a small friend stay with me."
"I don't stay alone but I'm scare."
I'm scared of what happened to my son.
Because in my life. I never pretend to being friends. And all my brothers it is all the same.

After this event happens with my son.
The only son I have. I am confused and don't know "How can I fix the problem?"
I can't sleep, I'm trying to find a solution. But I can't find.
I never taught my son to fight. Or self-defense.
I taught my son to know, but the word "forgiveness", "gentle", "Don't bullying other people."
I want my son. "Good members of society."
But I do not want my son. "Victims of society."
How can I do? If I taught my son to know how to fight. It would be better. But I don't want to see my son assault. Or that the children of others as well.

I can't help my son for this problem but I went to see the teacher of my son.
She told me that "My son is very naughty, but not interested in learning."
I start not sure "Did she interest my son?".
She didn't know that "My son is trapped in the bathroom."
Now I try to put the ball "is close to his father's."
I think that sometimes in this society.
"The only gentleness can't help my son for able live in society more easily. Because my son can't survive have."

My son will be learning to stronger, be more manly, and the struggle.
He's only 4 years old.
Actually, I don't agree with this idea.
Because of severe Never make good things happen, but will destroy everything.
I will try to strike a balance between "gentleness" and "violence."
It is too early for small children who are being mischevious like this.
I really don't understand.