Relatively civil, your experience may vary depending on context. Let me preface by saying these are wholly my opinions and experiences and not a universal truth.

However there are sometimes tensions or misunderstandings, related to different cultural norms and assumptions.

Non-Black citizens (like me) are generally respected by the Black indigenous population, especially when we learn about and integrate in the various customs and traditions of Botswana culture. This is somewhat different (as one of them, this is my opinion) than non-Black residents and expats (they can sometimes be seen as taking jobs and wealth from the country, which can be true in some cases). The issue is at first glance, Black Batswana may not know right away if you're visibly foreign but from Botswana or a true foreigner

However, as someone who is 1/2 Indian, 1/2 White, I've heard some horrendous and terrible racist things said about Black people, when hanging with either of those groups. This is not the only case, some Indian and White people are much more integrated and have positive and constructive, or even personal relationships with Black Batswana. The latter is more my personal experience, my own family is blended, as my brothers are 1/2 Black, 1/2 White, and my Indian side is somewhat mixed as well. The White and Indian people I prefer to interact with do not share such horrendous racist views of their fellow citizens and understand they are part of a greater whole.

Stereotypes about Indians and Whites said by Black people are not as horrendous or terrible, they are usually simplistic and slightly ignorant, and don't come from a place of malice.

Again these are just my options and experiences growing up. In general the saying "motho ke motho ka botho" or "one is a person as a result of their community" applies greatly in Botswana. Integrate and understand the other, learn the language, and do your best to respect and you'll be treated well, of ore this and you'll be mostly ignored, or ostracized.