Because you consider immunity to be a privilege only when fits your narrative. Immunity is a privilege or it isn't.
I am not immune to racism. I am also not a victim of racism. If I go to Japan, or Korea, or China, for instance, I'm very likely to be a victim of racism. However, by not being there, I am not. I do not have a privilege of being immune to racism. The rich and powerful are often immune to the law.
Example. I have worked before in a classified environment. If I had done 1/10 of what Hillary Clinton has been shown to ahve done(clearly shown, not conjectured or politically assumed, but evidence exists) I would be in jail right now. If I had even had a scintilla of classified information in an unclassified system (this is the evidence clearly shown), marked, unmarked, doesn't matter, I would be extraordinarily lucky to just have lost my clearance. The most likely outcome for just that is jail time. Clinton isn't even charged for an offense that would have, at the barest minimum, cost me my job and at the most likely, put me in jail.
Because it is illegal to have classified information in an unclassified environment. That it wasn't marked, or that you didn't know, isn't sufficient defense for anyone but the rich and powerful. Similarly, if I had done what Patraeus had done, I would also be in jail (that's not even a question -- the outcome would have been prision). So that's not a politically motivated statement, it's just true.
However, if I go to Japan, I will most likely suffer racism for being white. I don't have any special immunity or different set of rules with regard to racism. I just happen to be a non-victim.