I call BS... A boss does not have a right to stalk, harass, threaten and fire people because of their opinions. We have labor laws. Bosses are not above the law. They cannot fire people because of their gender, gender orientation, national origin. political affiliation, religion. etc. It benefits everyone if everyone is aware of their rights. Bosses can't lie about you and fire you just because they don't like you. That's discrimination. Most businesses have policies to ensure a safe and productive environment for everyone. If bosses behave like tyrants the employees have a right to form labor unions to stand up for employee rights.
http://www.nolo.com/legal-encyclopedia/colorado-employment-discrimination-31680.html