Right. What is your problem? You don't think blacks can be aircraft commanders? Or that a black pilot couldn't kick a white guy? Man are you racist.
Not my point at all. One can either believe the airline's story or the agent's story; at this point I don't know what happened and will not jump to conclusions. However, if it turns out the agent's story is truthful, I submit the pilot made an egregious error in judgment by booting the agent. And claiming the pilot has final authority (which he legally does) will not negate his poor decision.
As I said, I don't know which story is the accurate one at this point. It appears the USSS and American are investigating - in the meantime, all we have is speculation.