Vegan vs vegetarian; The suffering and oppression caused by a glass of milk or a slice of cheese

My comment to a person:
I am glad that you and some of your children are vegan:
You wrote about that you have a vegetarian child. Does he/she know this?:
Drinking milk causes the cows to be raped, heavily abused, having their milk stolen, having their calves stolen the same day they conceive them, having their male calves slaughtered for "meat", having the cows being killed 5 years old because that they can't produce enough milk.
Please watch this story: http://www.youtube.com/watch?v=Rg3Yfdbs24I&feature=player_embedded

This is a wonderful movie with cows (non gory): http://www.youtube.com/watch?feature=player_embedded&v=vcQ6yBEE5N0
Animals have the right to be free and not to be enslaved. I really recommend this article: http://www.onegreenplanet.org/animalsandnature/what-are-the-roots-of-freedom-and-slavery/