To be fair, the virus-truther at least has a point on this one. The Bronx is far more dense than most of America and has a higher rate of minorities (who for some reason are more likely to die from this)
Most of America will probably at least do somewhat better than the Bronx is, but that doesn’t mean we should reopen by any means.
Many blacks suffer from obesity, high blood pressure, and the diseases associated with these (particularly heart disease and diabetes) at higher rates than the rest of the population. Blacks are also more likely to live in multi-generational households (as are Hispanics), have less reliable (and lower-quality) healthcare, and are more likely to live in neighborhoods with more unsanitary conditions. Throughout this country's history, we've been hit by just about every natural disaster or pandemic worse than whites have.
This is replicable in many diverse population centers. Look at San Francisco for example:
https://www.sfexaminer.com/news/people-of-color-make-up-majority-of-coronavirus-deaths-in-san-francisco/Economic hardship and racial/class disparities are often correlated for obvious reasons.