Lee Garrett, of course, is the Bachelorette contestant who was slammed for past racist tweets.
In her apology on Thursday, Block said said the tweet "came from a place that humored the failure of representation of minorities in reality TV and belittled the significance of Rachel's presence on the show."
"I acknowledge that entertaining this kind of humor is a passive and careless action that stifles the progress the black community has made in television and continues to make in this industry," she shared.
"It is vitally important to prioritize these experiences and help destroy the oppressive forces that threaten minority communities. My tweet did neither of those things and I see that as a personal failure," she continued. "In my initial Twitter responses to concerned Bachelor Nation fans, I was defensive. The attacks directed at me felt to be responses to the epidemic of injustice we have towards individuals of marginalized identities - especially the black community. I accept responsibility for my ignorance and as I move forward I will engage in these issues - so I can become an informed ally who would never consider that tweet to be funny in the first place."
"Our society should have no place for hate that targets any minority group. We can't make the future better until we make ourselves better. And I'm starting now," Block concluded. "Best of luck to Rachel and her suitors this season."
Lindsay told ET before her season started that she wasn't going to shy away from the fact that she is the first black lead in Bachelor franchise history. See more in the video below.