Those who would try to put me in a collective shame are doing that for their own reasons, likely to assume some power over me. I can deplore the horrors of slavery, racism, and terroristic activity without guilt or shame. The idea that I hold any guilt simply because I am white, male, straight, and middle-class is both laughable and intellectually dishonest.
Matthew 7 cautions us about judging others. Those who accuse me would do well to study it.