Dave, you seem to be confusing real numbers with percentages and confusing demographics.

MSM have by far the highest rates of new hiv infections in the US.
Within that demographic (MSM), black African men are most affected.

In US society at large, taking all demographics into account new hiv infection rates are relatively small, but within MSM (of all colours and ethnicity), infection rates are extremely high, so high, that I believe that testing and contact tracing will soon become inevitable.

Of course, were these rates apparent in any other demographic, I would want to see testing and contact tracing begin immediately.