system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Intelligence is not equally distributed among all groups.

While the topic is usually associated with race/ethnic groups, I mean it in a broader sense. Humans constantly divide themselves into groups -- nationality, skin color, ethnicity, education, wealth, social status, STEM vs LA, etc. Many people assume -- and are often offended when you disagree -- that intelligence has the same distribution among all groups, but I find it hard to believe. 
EDIT: It's been pointed out too me that the concept of "human groups" is much too broad, so I decided to focus on countries. By countries I mean the whole population regardless their ethnicity or legal status -- locals, immigrants, etc. all included. 

Let's imagine a small population of humans that divided itself into groups with a perfect distribution of intellect among them -- all groups are utterly equal from an intellectual perspective. Time goes by, our groups' development starts to diverge into different directions. Eventually, many generations later, we end up with civilizations very different from each other. 
In some groups smarter partners may be preferred, while in others intelligence and individualism may be viewed as arrogant and detrimental to the social structure. These very polar groups have a different concept of the ideal sexual partner and their preferences will have a significant impact on the intelligence of the whole population -- one of them will reject intelligent people and the other one will adore them. 
Everyday violence and wars can also impact the distribution of intelligence. In case of war, the smarter individuals can be either protected and given important duties, or, as it has happened in the past, they can be slaughtered by the enemies(Intelligenzaktion during WWII). 

Of course those are very simplistic examples, but they can be applied to the real life. How can people believe that something like average intelligence is constant among all human populations when they know how fundamentally different those populations are? Especially when nowadays many smart and successful people from all over the world travel to richer countries because of opportunities. Some places become enriched by the world's intellectual creme de la creme, and the less intelligent people are becoming more concentrated in certain areas. 

The problem is still there regardless of whether you consider intelligence purely hereditary or something that can be developed through hard work. Surely, if the latter is true, then the poor kids in a rural Asian village don't have as much opportunities to improve their intellect as Asian kids from a rich city.
gpt
This is an overbroad topic.

Of course different groups will have different intellects. 

No one would argue that a groups of professors at a convention of rocket scientists will have the same average IQ with a group of students in a special education classroom. 

Can you perhaps, limit this CMV to comparing some particular groups as opposed to "all groups"?