Civil rights movement we were told that race was not the issue it was " content of the character"

I am getting very confused.

I am getting very confused.
For most of history race or gender  was an important factor. There was your tribe " the human beings..the people ...etc" and the others and man's work and women's work.
Now in the 1960 with the Civil rights movement we were told that race was not the issue it was " content of the character" In 75, we were told the same of gender.
Now, 2017, it seems PC racism/sexism  is coming back and if you dont accept and take race/gender into account in hiring or political or social interactions, you are a "racist?  or sexist"?? Oh and if you dont accept the PC definition of racist  and sexist and thus refuse to feel guilt or make amends for things that you have not done based solely on your race/or gender, you are a racist or a sexist!!.
You know the problem with this..or at least one of the problems is that this continued cry of "WOLF" by the PC will and must by the very nature of  things deafen people to real cases of injustice..but the PC pols care little for people only for political power