It is useful to have a historical perspective. The Democratic party was the political party of slavery in America, at the time of Lincoln. They liked the status quo of slavery, because they could do anything their wanted to their slaves. They could deny the basic humans rights in the Constitution, because their entitlement; car title, superseded all rights. The Republicans saw that equals right for all could not exist for the slaves, as long as the slave owners were entitled. It was lawful for the slave owner to rape female slaves, because their entitlement, as owner, allowed them the ability to supersede human rights. It is not called rape when one is entitled. Murder is not called murder, if the entitled king does it. Right as king means entitled as a citizen.
I think blacks were viewed as being less than human, which is how the denial of human rights was justified. Kinda how the fetus is viewed by many today.
Rights and entitlements is an interesting issue. I think that if you pay into a specific program, then you are entitled to its benefits--such as social security. We pay taxes at the gas pump, we should get a return by having better roads. I think the problem develops when one group is shouldering the cost for another group. I think everyone agrees that we don't want people starving in the streets, but a problem might arise when the one group becomes dependent on the other and gives nothing back in return.