Answer:
White Privilege.
Step-by-step explanation:
White privilege is a privilege or advantage that white people have over their fellow citizens just because of their skin color. This societal prejudice over the non-whites by the whites is also a form of racism, though it may not seem as serious as the black racism.
Considering the given example, the 'white' Alexander isn't fined and let off with just a simple warning. But the case was different for 'non-white' Hispanic Christopher who did the same offence but ended with a ticket and not a warning like Alexander. This is a clear case of white privilege that the policeman was practicing, giving advantage to the whites and acting otherwise with non-whites. Even though everyone have the same rights and political, social and economical circumstances, the whites are prioritized over the non-whites just because of their fair skins.