A child who has been taught to respect others will earn respect. So many time you hear from young thugs, " He/She didn't show me respect. I always wish I could face these people and tell them "you earn respect not demand it". I've also seen older people demand respect then wonder why it's not forthcoming.
We taught our 3 daughters to have good manners and always consider others. I also told them the only job where you start at the top is digging a hole.
We got many compliments on how well mannered they were, especially when they were in their teens. We must have done it right because all our grand children have beautiful manners.