Dairy

India is the largest producer of dairy, with an annual production of about 120 million tonnes using about 35 crore (350 million) cattle.

Cows are forced into body-breaking cycle of pregnancy, birthing and milking throughout their life (either through common bull or an equally torturous process called artificial insemination) in all the dairies. The semen for the insemination is taken forcefully from bulls by electrocuting them. 

The mothers also endure a lot of misery in not being able to spend time with their babies since the calves are taken away soon after birth. Male calves are often sold for slaughter or left to die of starvation. 

More than 10 million calves are slaughtered per year in India, that is 1 every 3 seconds....

Dairy comes from grieving mothers and dead babies.. 

Do Vegans hate others

This excerpt from Bite size Vegan's video sums it up.
"I believe that is where so much of what is often seen as vegan “hate” really comes from- a devastating sense of loss, a profound mourning, and a feeling of utter powerlessness. when your eyes are opened to the extreme enormity of unnecessary animal suffering and death at the hands of our species, it’s hard not to become overwhelmed with anger and disgust. 

of course, this passion can sometimes overwhelm us and come out sideways in petty aggression or arguments. but to my non-vegan friends out there, know that this almost always comes from wanting so bad to save the lives of innocent animals and feeling powerless against what often seems to be a losing battle.

It is equally important to note that many non-vegans honestly and truly don’t know any better. We were also non-vegan at some point...."

Read more here