There is a ballot measure this Fall in Oregon that would ban pet and livestock ownership in the state. The backers got over 100,000 people to sign the petition.
There are people that either simply do not understand the natural order that the majority of humans want to eat meat and keep pets, or they do not care about other people enough to respect their lifestyle choices.
In the past, though, dogs (domesticated wolves, however you want to look at it) were more akin to 'hunting partners', wouldn't you say? But for you the line is crossed when we start keeping them in kennels/breeding them, I guess?