No you're not breaking any laws, but you sure aren't making any laws opposing the slaughter of animals to help the world either.
To honestly testify in support of killing animals is relatively hypocritical and insane, not to mention asinine. There is absolutely no need for animals to be killed, tortured, abused, or anything done to harm them. It's a fact that you can get the exact nutrients you need from vegetables, roots, fruits, leafy greens, nuts, legumes, etc. that you "must" eat meat for.
As for the slaughterhouse videos... You'd be surprised how many factories and general farms have done that. Luckily more and more people are going Organic on their farms (Just visited a dairy farm in the making and they're working on being Certified Organic.

). But seriously, this doesn't happen as infrequently as you think. This happens much more often then I think you would want to know about, however. Then again, such suffering doesn't need to occur at all. No real reason for it that isn't specifically selfish.