I also think that this story reflects the fact that a significant minority of people out there get way more outraged by cruelty to animals that cruelty to humans. I find this attitude quite sickening.
In our world, cruelty to animals is applied on a scale that completely dwarfs cruelty to people. So even if you think the suffering of a cow or pig matters 1/10th the suffering of a person, the total amount of suffering among farm animals is still daunting and horrible.
That said, cruelty to anyone is bad and it's reasonable to be upset about any and all of it. I hate the way farm animals are treated, and I also hate it when police harass/abuse/execute innocent people. I won't fault anyone for focusing their outrage a different way than I do.