It shows you what is often searched for which is informative, even if in that case it shows that racism is common (which arguably is informative within itself, albeit depressing).

Personally I like doing "[Something] Vs " to see what people consider are competitors. For example: "hacker news vs " returns:

- "hacker news vs reddit"

- "hacker news vs slashdot"

- "hacker news vs code"

etc.

"The dose makes the poison" is not something I expect an average Google user to have modeled accurately.

Edit: after reviewing other examples in this thread, my opinion of an average Google user has fallen drastically. Was mostly having a laugh at the fact fluoride salts are generally a thing I avoid, which seems to be the intuition represented by your example.