This Is Why Siri Has An Offensive Answer When You Ask It "What Is An Indian?"
The reply appears to be due to a cached Wikipedia edit from June 2017.
The answer, which purports racist stereotypes, links to a blank Wikipedia page with no further information.
It appears that Siri's answer came from an edit made to the Wikipedia article for "Indian" on June 8, 2017.
The user who made the edit, Thedarkoverlord123, also made changes to the Wikipedia pages for "Diwali" and "Carbonara" on the same day.
BuzzFeed News has reached out to Apple to ask how often it updates Siri's responses, and how it's working toward preventing this happening again.