You are not doing a child a favor by giving your patient attention to obnoxious behavior. You're the boss. Some parents with gentle dispositions and democratic ideals have trouble with this one, but being the boss doesn't mean you're a tyrant. You can listen to children, you can argue and you can even be persuaded. Constant negotiations are for labor disputes, not functional families.
Kids feel secure knowing that someone is in charge.
On the other hand . Children develop self-confidence by being able to have a say in their world and an overbearing parent can do too much. Censoring behaviors should be limited to issues of health and welfare. Infant colic gives way to toddler tantrums and school anxiety and . . . Eventually most children leave home.