Is there racism still in this country? Yes, and there always will be. There will always be sexism, people who don't like Hispanics, Jews, Asians, and so on. There are 300 million+ people here. Not everyone will care for everyone else.
My uncle was in the Bataan Death March. That was probably one of the most horrific things that happened to American men in history. He told me he hated Japanese people for years after that, but eventually realized they didn't represent ALL Japanese people. He moved on, still bearing scars and barely being able to talk about it, but moving on. Was slavery bad? Yes. But it wasn't a government act, and it was 150 years ago, it was very few people who owned slaves, none of them are alive today, and today we have a black man as President. What more does anyone need to do?
150 years ago my female ancestors couldn't vote, couldn't be doctors, couldn't be politicians, and so on. Wow. Should I be bitter about it? Nope.