I got into HR to help people, but is HR's purpose to protect the bosses and managers?

HR is about managing human resources at the company, to the benefit of company, because the company pays people to do tasks that benefit the company. I wish it wasn't such a widespread misunderstanding, but I mean of course they work for the company, that's how employment works in our dumb society. The misunderstanding should be cleared so people can understand that there already is a thing that can help them, a strong union.