Go full right wing and use statistics. that always works.
When Haplo group L3 left Africa haplo group L2, L1 and L0 stayed behind these groups later evolved in to Negroids.
The weren't even colored yet as there was no need for skin adaptation living in lush sun blocking jungles.
African negroid is not ancestor to Europeans and Asians, even Australians did not evolve from African negroid blacks.
The fact is Africans are very uncivilized.
They are sub humanoids with a small intellectual capacity.
They evolved in a plentiful and rich biotope so it was not a problem to be waist full or to destroy things.
In competition with other animals and the inability to craft tools to overcome the balance, they developed to be loud and aggressive to scare off or kill other animals that potentially are a threat or a resource (so the ones that where less aggressive were less successful).
All other races have Neanderthal (a highly evolved empathic and intelligent human sub species) DNA in them resulting in higher intellectual ability of these ppl.
They were hominids that lived in a extremely harsh climate around 100 000 to 250 000 years ago.
cooperation teamwork saving and managing resources was key to survival.
Empathy came in to play as well as if one member of the group was weak or injured it was beneficial to help him or her.
This member might have had a skill that would pay off in the long term.
Also taking care of your children and teaching them is more important in a harsh climate. Making sure they don't freeze to death or starve in the pre teen years becomes more important as well.
Africans only had to deal with a high death rate from wildlife.
There was enough easy food and living to keep up a high rate of birth.
Because of this there was no genetic selection for cooperation ,teamwork abilities, intellect , empathy, efficiency, conservancy or the ability to convey information from one person to another , simply because nature never required it.
It is easy to just use science and fact.
You dont want to scare them off, you want to redpill them. you want to turn them to the bright side of the force.
Their numbers are growing we have to corrupt them and leech their numbers whilst growing our own.
This is your duty, this is your plight, now stop your bitching and get to the front line