OT: Census "race" question

Here's what I wrote. Me: Some other race: "Caucasion" (I am not white). Kids: Yes, other Hispanic: "Born in Guatemala"; Some other race: "Indigenous American." Enough info for them to figure it out. I am very suspicious of the separate question about Hispanic origin. I smell a huge agenda. The whole race/ethnicity business has me quite irritated. It takes up the majority of the census. I'd leave it blank if I thought it was allowed.