Why don't you just focus on passing laws requiring better treatment for farm animals?
In the United States, many organizations have been trying to do that for decades, but they have not been very successful.
For example, there have been ballot initiatives in some states requiring that the cages for the animals have to be made slightly larger.
However, even with these laws in place, most of what is shown in the factory farming videos is still legal and standard practice, and even the farms labeled "free range" and "organic" are typically not much better than what is shown there.
The problem is that if more significant changes are demanded, the law is unlikely to pass, due to the fact that the industry will correctly point out that this will significantly increase the price of animal products.
Also, the few laws that already do exist are rarely enforced.
Follow up questions:
Why are "Free Range" farms not much better?
What if humans treat and slaughter the animals humanely?