would it be legal for airlines to charge more for blacks?



If the 14 was passed a few decades ago it might be valid to use it to strike down old laws but since it is about 150 years old I don't believe it is valid for judges now redefine it to mean what they would like it to mean. As you mentioned there is an amendment process and that processes isn't for judges to simply decide old amendments mean new things. The role of the courts is not to change society but to ensure that changes are enacted in accordance with the constitution. Anytime the courts are initiating the change their actions are suspect.

You are the one who is showing a serious lack of understanding of how checks and balance works. Judges should not be create laws or change existing laws to meet their personal ideal of justice and that is what is happening here. A judge wants to change a law to make something legal that has been illegal for virtually the entire history of the nation. This is a major social change for our nation. It is a change I support but it is still and major social change and the check and balance system is designed so that no single branch of government acting alone can enact major social changes but instead require all branches of government acting together. In other words major social should require consent from the people not the will of and rightly or wrongly that will does not exist right now. Supporters of gay rights like to sight the civil rights movement as an example I think that is often valid but you have to look at the entire movement. Civil rights did not move forward until we had a president a legislature and courts that was willing to move it forward. That happened because enough people were willing to vote for pro-civil right candidates. If the courts had tried to act alone they would have failed.

To get true change it requires not only all the branches of federal government to act together but for the states to participate as well. The federal government began the push for civil rights but it was not until the states became involved that we start seeing real change and the few hold states were forced to change eventually as well. Not all the states went along of course but the Jim Crow states were in the minority. How many states have passed legislation allowing same sex marriage?