FREEDOM OF SPEECH

This morning I watched the 2005 documentary film called 'Fuck'. Obviously it's about language, and the F word in media and on the streets. It is apt that I had a run in with the word this weekend as my three year old repeatedly said it whilst climbing the stairs. I heard him say it but I was unclear as to whether he had actually said it or if he was just making a similar word up. I heard him say it about four times by the time he joined me to brush his teeth upstairs.
"What did you say?"
"Fucking" he said. 
"YOU DON'T SAY THAT WORD" I shouted. 
He smiled at me and giggled, thinking I was joking. I don't shout at him ever really unless we are just fooling around messing. 
"No, I am not joking" 
I went to get his clothes for a minute and when I came back he said.
"I said it quietly dad" 
"What?" 
"Fucking!"
I smacked him and shouted again. 
This time he cried. We reconvened downstairs and I told him that it is a naughty word that must not be said. I calmed him down but did not apologise for smacking him. I hope that memory will stay with him enough to not say it again until much older. 
I am not against swearing. But I'd rather he was 13 or so before he needed to use it and not in front of me. I first learnt swear words when I was 7 from the school playground. I used them in certain company from then on. I love language and choosing words though so I have an appreciation for swearing. If swearing didn't still carry any power and effect then I wouldn't bother using them. 
Here on this blog I am allowed to swear because you are a guest in my domain. There is a warning which you had to agree to before you entered and you can leave at any time. 
I don't want children subjected to it on the TV but I want to accept that they hear it on the streets from friends. As long as they know it can be offensive I am ok with it. 
They are words only though. Just a sequence of letters which can never be as hurtful as a punch in the face. I would not hit anyone through choice and yet I will write CUNT on here. It's a word. It is the power that you give them which makes it offensive. If I read that word for example then I know others may balk at it but I won't. In fact my ex wife and I both use that word for effect but NEVER for the female anatomy. 
We use it to mean horrible person or idiot. 
Bad language is everywhere. Drugs are everywhere. Sex is everywhere. It's just a matter of them being in their correct places.