The average black guy in america, which is really part black part white, is around the same height as the average white guy. Obviously blacks commit more violent crime than other races, but if you are walking down the street and see someone who is black and think because of their race that you should be afraid, that is racist.
Are you scared of white people and hispanics because they commit more crime than asians? I would assume not. Being afraid of anyone because they are a certain race is just ridiculous. You cant go through your life being afraid of people for reasons like that or else you will always be afraid. Its unreasonable anyways, your chances of getting in any bad situation with a black person are so incredibly low, even though its statistically higher than with a white person or asian person.
If you imagine walking down the street and seeing a black guy wearing a suit who says “good day sir” and you wouldn't be afraid of him, then youre probably not afraid of black people and youre just afraid of people who act like street thugs or overly aggressive. Of course lots of them are black but then the problem isnt their race its their behavior.