It's simple arithmetic.
That's the problem. They don't understand the mathematics.
The entire black population of the US comprises approximately 13% of the total.
That's counting every single man, woman, child, baby and elderly person.
If the male population segment of that sector is like the rest of the world, then we are talking only 6-7% of the population at large.
If you exclude the children below 16, babies, and elderly above 60 years old or so, then that number drops to maybe 3% of the whole.
Cut that number in half, dividing the good people from the bad, then you have at best 1.5%.
Not good odds if you want to start a war with anybody..........................