If you can stomach it (and, frankly, I think anyone who eats meat should know how their food makes it to their plate), I suggest watching Earthlings [0] or Land of Hope and Glory [1].
For reference, an estimated 99% of all farmed animals in the US live in factory conditions [2].
If you prefer books, Eating Animals and The Omnivore's Dilemma are also classics and worth reading. As far as I know, not much has changed since those books were written.
For reference, an estimated 99% of all farmed animals in the US live in factory conditions [2].
[0]:https://youtu.be/8gqwpfEcBjI
[1]:https://youtu.be/dvtVkNofcq8
[2]:https://www.sentienceinstitute.org/us-factory-farming-estima...