Think about this:
Sometimes racism isn’t about vicious bigotry and hatred towards those with different skin color than your own, let alone a willingness to walk into a church and massacre nine of those others because you think they’re “taking over your country.” Sometimes, racism is manifested in the subtle way a person can dismiss the lived experiences of those racial others as if they were nothing, utterly erasing those experiences, consigning them to the ashbin of history like so much irrelevant refuse.
Those few words are enough to explain the dismissal of what minorities are saying as playing the race card. But why stop there? Why not see the full explanations of how institutionalized racism works and how easy it is to participate in it. http://www.salon.com/2015/07/01/the_oblivious_casual_racism_of_modern_conservatism_partner/
Now you want to read something with real entertainment value? Read the comment section. I swear I believe if a racist was drowning and a float was thrown to him that had the words 'common sense' written on it, he would reject it and die from that sheer stupidity.