That's the usage I'm familiar with even in regular discourse, although apparently many HNers have a different view of what the term means, so maybe usage differ

That's the usage I'm familiar with even in regular discourse, although apparently many HNers have a different view of what the term means, so maybe usage differs. To me, "discrimination" is more of an objective issue, not the same as "prejudice" or "bigotry" which are more subjective issues. Saying "Google is prejudiced towards Native Americans" would imply that someone there actively dislikes Native Americans, while saying that "Google policy [x] discriminates against Native Americans" only implies (to me) that the policy has a negative effect that specifically impacts Native Americans, but doesn't imply that someone at Google came up with the policy out of a dislike of Native Americans or an actual intent to harm them.