The Keeping Up With The Kardashians star shared her heartfelt feelings with fans on Wednesday night (7 May), addressing concerns about her baby's future.
North, whose dad is Kanye West, will turn one in June.
In a reflective mood, Kim wrote on her official website: "To be honest, before I had North, I never really gave racism or discrimination a lot of thought. It is obviously a topic that Kanye is passionate about, but I guess it was easier for me to believe that it was someone else's battle.
"But recently, I've read and personally experienced some incidents that have sickened me and made me take notice. I realise that racism and discrimination are still alive, and just as hateful and deadly as they ever have been."
Kim went on to say that she feels "responsibility as a mother, a public figure [and] a human being" to ensure her child and other children can grow up in a world where they aren't judged on skin colour, gender or sexual orientation.
"I want my daughter growing up in a world where love for one another is the most important thing. So the first step I'm taking is to stop pretending like this isn't my issue or my problem, because it is, it's everyone's."
Kim listed several high profile cases of young people being killed or hurt because of their sexual orientation, beliefs and skin colour, adding: "They are all someone's son and someone's daughter and it is our responsibility to give them a voice and speak out for those who can't and hopefully in the process, ensure that hate is something our children never have to see."
The reality star told fans that she never realised just how much becoming a mother would change her and that North was "brought new meaning to every moment" in her life.
"What once seemed so important, now feels insignificant. It's like I get to see the world for the first time again, but through someone else's eyes. It's a beautiful thing to feel and experience so much more, but with that beauty comes a flip side – seeing through my daughter's eyes the side of life that isn't always so pretty."
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