The reality star was criticized on social media for defending makeup artist Jeffree Star after his past racist comments.
"Guys, I see you being so petty and bringing up things in [Star's] past where he was negative, but he has also apologized for those things," Kardashian, 36, said in a series of Snapchat videos on Monday, August 14.
"I get [that] it's a serious deal if you say racial things, but I do believe in people changing, and people that apologize, I will give them the benefit of the doubt and accept that people change and move on."
Reflecting on her own past, the Keeping Up With the Kardashians star continued, "I know better than anyone that I hate when people bring up my past or mistakes that I've made in the past.
"I want to make one last thing clear: I do not defend people that are racist and I am very against it," she told her Snapchat followers.
Star, 31, made headlines in June after years-old videos of him uttering the N-word and other epithets resurfaced.