When you run a job ad don't talk about how you all go to the beach every Wednesday and then say you're looking for a close cultural fit. This probably discriminates against people in wheelchairs (and probably several other groups).
When you run a job ad don't have a photo of your team (all male, all age 18 to 26) and then talk about cultural fit.
Mentioning "cultural fit" is sometimes a huge fucking flag that you're doing something wrong.
As an aside: "do we have to employ dumb people so our company has more black or female or disabled employees?" is a remarkably offensive thing to say. It's pretty close to what you're asking.